I agree. God has given man Free Will. You can choose to look or not.
As for the government having porn in the library, if you don't like it, there are proper channels to go through to get it removed short of breaking God's and Man's Law.
Doing something wrong for the right reason is still wrong.
Doing something right for the wrong reason is still wrong.
If the librarian put it there knowing what was in it, he/she should be fired. However, odds are, they saw a comic book and naturally put it in the kids's section.
You're confusing "power" and "right."
God has given man the power to do evil. But God's ordaining will is that we avoid evil. Those who do evil and do not repent are damned. And those who lead Christ's little one's astray would be better off thrown into the sea with millstones around their necks.
God did not give man freedom to do evil, but to do good. God does not give us a right to do evil. The idea is self-contradictory.