So why has the all powerful god never intervened to reduce or ease the suffering when people are comiting acts that cause great suffering to others? If god exists he is still putting the free will of those comitting evil acts above the suffering of others. Not very good at looking after his creation then. Or maybe he does not love us enough to bother keeping a close eye on things.
Secondly, having "nasty" thoughts does not make one evil. Acting nasty however can.