That "Nazi Salute"

Hitler and the National Socialist Party were abhorrent and people who supported them are rightly vilified.Whether the so called salute is really a salute, a young girl having a joke or wave we will never know.
It is interesting that people who expressed sympathy for Communism and "nice" Uncle Joe" Stalin are not vilified in the same way as those who express any kind of sympathy for the Nazis are. Yet when it comes to mass murder and wholesale massacre of people Stalin makes Hitler look like a vicar at church tea-party.