"The number one Jew-baiter" was his reputation. He organized a boycott of Jewish businesses in 1933 and advocated the Nuremberg Decrees of 1935. Three years later, he arranged for demolition of a synagogue in Nuremberg. He then began to call for annihilation of the Jewish race. There was documentation and he admitted it all himself. He also collected pornography. He said that he bought it from Jews to show what filth they read. On October 16th, 1946, he was hanged.
Did the consequence fit the crime? Some may say yes; some may say no. I believe execution was too extreme. I think he should formally apologize to the friends and family of those he effected. Then, he should have to do much community service and jail time. As for all Nazi's convicted of "crimes against humanity", I think they should have similar consequences. You may say this isn't enough punishment for the terrible things done. But, if they're truly sorry, everyone deserves forgiveness.