I like both Matt Slick and James White—great writers and insightful apologists that have encouraged my faith in the past. That being said I don’t agree with their Calvinist leanings. Today their viewpoints will serve as two principal examples in highlighting the weakness and inadequacies of the Calvinist position in regards to God’s sovereignty and evil.
Calvinists will often attempt to assert that God must have meticulously predetermined all the perverse evils of mankind because if he did not then the evils which do occur would demonstrate that:
1) God is helpless in the face of them.
2) There exists no meaning or purpose in God permitting an evil event he did not predetermine.
For example Matt Slick writes, “If libertarians [Arminians] were correct in that man has “free choice,” then when man committed a gross evil against his neighbor, the evil committed would have been pointless. That is, if God had no control over what, where, or when evil took place, then it only naturally follows that the suffering produced from the evil was without purpose, and thus pointless. For example, if someone were robbed and beaten, and yet God had no say in the crime whatsoever (for it was a free, uninhibited action based upon the criminal’s free will), then the person robbed would not have only been unjustly treated, but the evil he endured would have had no point to it. It was just a spontaneous action from a criminal. God is sort of left helpless in the matter.”
Calvinist theologian James White takes a similar stance. In a debate with Hank Hannegraaf and George Bryson, White was asked, “When a child is raped, is God responsible and did He decree that rape?” To which Mr. White replied… “Yes, because if not then it’s meaningless and purposeless and though God knew it was going to happen he created it without a purpose… and God is responsible for the creation of despair… If He didn’t [decree child rape] then that rape is an element of meaningless evil that has no purpose.” 
As is obvious both Matt Slick and James White are committing the logical fallacy of a false dilemma. Namely they are insisting that there exists only two alternatives or solutions to a problem when in fact there are other valid options to be considered. Clearly the false dilemma presented by them is that God is either meticulously sovereign in the face of evil, decreeing every evil event, choice and thought according to his secret, irresistible decrees, or God is helpless in the face of evil in virtue of not decreeing all evil. Moreover both Slick and White further imply that if God did not meticulously decree all the evil that pervades this world, then there no longer exists any meaning, point or purpose for God to allow evil’s occurrence in the world.
This is a serious contention and challenge. If evils do occur in this world freely, such that God did not divinely predetermine them, does it follow that God has no purpose in permitting such evils? Take for example the child being molested and raped. This would be a tragedy specifically because God did not desire it or will it. Yet it occurs anyway. Does it mean God was helpless in the face of this evil? Does it mean God retains no purpose in permitting choices that result in evil? How do we reconcile this with a sovereign, omnipotent God?
As is obvious the answer to both Slick and White is that if evil actions are done freely— that is the purpose!  The overarching purpose God has in permitting evil that he neither desires nor has determined is to preserve his original intention and sovereign decision to create mankind free. That is to say God purposes to allow evil to occur, even rape, because God purposed for the will of men and women to be free and self-determinative. And God refuses to abort that meaningful, sovereign intention simply because of humanity’s misuse and abuse of such autonomy and self-determination.
Notice also how White tries to mischaracterize the Arminian position by smuggling in the word “creation” when he argues that if God didn’t decree the rape but knew it was going to happen (or even knew it was a possibility) then “God created it (rape) without a purpose…God is responsible for the creation of despair.”
Created rape? Not at all.
Only in Calvinism does God conceive of and create evils like rape through irresistible decrees that men are powerless to choose against. The Arminian position is not that God “created rape” but rather God permits it to occur because in his wisdom he knows he can only prevent all evil by countermanding his own sovereign intention to create a world of morally responsible agents capable of good. So it is false to say God “creates” evil in the Arminian context. Rather God created man. More specifically God created man free and God sovereignly permits man to exercise his God-given freedom.
That being said, it does not mean God stands by passive and detached from evil. Not in the least. God seeks in every way to exploit the evils committed against us and ultimately use them for good in our lives. This often requires that we submit our bitterness, un-forgiveness and pain to him, but the good news is that in Christ we never need be completely victimized by evil.
God is fully capable of usurping and ransacking the evil intentions of others and overruling them for our good (as he did in the life of Joseph). But that is a far cry from saying God decreed all the foul, sordid evils of this world for the purpose of bringing about good. Or as John Piper puts it, “to make his glory shine more brightly.”
Calvinism would have us believe God has a need–evil– to bring about good. Moreover the thought is that God’s divine conception and determination of evil provides a necessary context for his glory to stand in contrast to evil– the very evils he predetermined.
Does that sound farcical and confusing?
That’s because it is. It would be akin to an arson setting fire to a house just so he can run in as the hero rescuer and splash his name across the newspapers. In contrast the position of Arminian-minded thinkers is that God seeks to trump the evils of this world and exploit them for good. His glory is in overriding evils for good (Arminianism) not justifying all evil by determinatively decreeing all evil (Calvinism).
All this to say, God’s will is not the only will “in town.” There are other wills in play in this universe: angelic, demonic and human. God has sovereignly given to free agents, not an exhaustive, but a certain amount of “say so” in determining world events.  In particular humans were made in God’s image, possessing self-autonomy and self-determination. Right now God’s will is contending with other wills in this universe. God could annihilate all other wills if he so desired, such that only his will determines a course of action or state of affairs, but God could only do that at the expense of jettisoning his sovereign intention to bestow moral freedom on his created order.
Apparently God, as of yet, has sovereignly chosen not to do this. It is not a question of God being helpless in the face of free-will, as Slick seems to think. It is a matter of how God has sovereignly chosen to create his world! That is the point Calvinists seem all to eager to avoid.
As Scott McNight astutely explains, “All of this can all be resolved by positing a sovereign God who sovereignly self-limits himself!…God permits because God chooses to grant humans the kind of freedom that God does not deny. God has a perfect will — what God wants for all — and a consequent will — what God wants in light of human rebellion. God is now allowing his sovereignty to be challenged.” 
The point Calvinists are so remiss in fully considering and engaging is the Arminian contention that it was none other than God himself who sovereignly purposed to create man in his own image and give men an autonomous, free will— knowing full well that mankind would consequently have the freedom and possibility to disobey and choose evil.
Why would God do that?
Because in his sovereign wisdom God knew there could be no true worship and no true obedience unless the freedom to not worship and not obey was a viable choice. For indeed God understood that if worship, obedience and love were to be purposeful and mean anything—they required free agency of the will whereby the choice to not worship, to not obey and to not love were real possibilities.
Now let’s delve further into White’s underlying logic that only acts done in accordance to God’s pre-determinative will have meaning and purpose. This too is patently bogus.  In fact quite the opposite is true.
Obviously from man’s perspective, if our all our thoughts, desires, choices and actions (both good and evil) are unilaterally chosen for us by an irresistible, divine decree, then all our choices and actions are meaningless and purposeless! For we are no longer in control over what we think and do! We are just God’s passive toys rendered willfully inoperative and motionless until God decrees us to think, choose and act. We aren’t even free to choose what sins we will commit or desire in our fallen natures– for the range of possible sins has been reduced to the one— the one predestined for us by God’s decretive will.
Thus all our choices are meaningless in the sense that they do not really belong to us. Instead they are God’s choices and we are simply his intermediate instruments to bring about his willed decrees.
This raises the question as whether or not our actions are meaningless from God’s vantage point? Maybe that’s what White was talking about when he implied that events outside God’s determinative will of decree are pointless and void of meaning and purpose. But if it were to be conceded that meticulous, divine determinism were true, as White believes, how would this change anything? In what way are evil events suddenly infused with meaning and purpose from God’s perspective?
They could only be said to be meaningful and purposeful in the same way that a stage director shuffles his actors around, scripts their lines and cues their actions. But is this world merely God’s cosmic stage and are we simply thinking, choosing and acting in accordance with God’s divine script?
That hardly seems to do justice to the scriptures admonishes of responsibility and accountability. The blunt truth is that if Calvinism’s theology of a meticulous, divine determinism were correct— it would logically entail this very post that condemns it! Indeed it is hard to see how from a human vantage point all meaning, purpose and responsibility doesn’t vanish or at minimum become incoherent. For as already insinuated, if anyone were to believe that all their thoughts, choices and beliefs were divinely determined, like White believes, it would necessarily entail their own belief in divine determinism! Moreover it would mean that anyone who disavows White’s beliefs would likewise be divinely determined to disagree with him.
Thus in a world governed by meticulous, divine determinism, beliefs are not the product of examination, analysis, reason and contemplation whereby we search for truth and weigh various options and make informed decisions. Rather they are just the spin-offs of God’s universal, exhaustive, meticulous divine decrees. White would have to concede that a person who believes in meticulous, divine determinism does so for the same reason that another person disbelieves meticulous, divine determinism. It has nothing to do with evaluation, truth and reason—and everything to do with what has been determined for them to believe!
Indeed it is hard to see how this wouldn’t be the very epitome of a pointless, meaningless and purposeless existence.