Fun Answer: Stand up and yell in a booming voice "FINISH HIM!!". Then, Winston Churchill, Franklin Roosevelt, and the rest of the ally leaders rise from the ground in bursts of blue flame. Each one, using a twisted up rope made of their own flags, grabs one of Hitler's limbs. They all then violently yank the limbs right off. Franklin Roosevelt then delivers a brutal good old American kick to the crotch, Stalin sets him on fire before putting the flaming Furher out with salt, and France delivers a vicious karate chop to the face. Winston Churchill then walks up to Hitler, whose torso and head are being held by the rest of the allies. Hitler is barely alive as Winston brandishes a giant flaming hammer. He then says "A man does what he must - in spite of personal consequences, in spite of obstacles and dangers and pressures - and that is the basis of all human morality. Despite whatever consequences may come, I shall do what I must: KILL YOU, YOU NAZI SON OF A *****!!!" Winston then smashes Hitler's head in with the hammer, as I yell:
[HEADING=1]FATALITY[/HEADING]
Serious Answer: Ask "Do you truly want to be forgiven?" If he does, forgive him, but he still must suffer the consequence of the law. No matter how evil someone is, if they're really, truly sorry for what they have done, then they should be forgiven.