What's the difference between Michael Phelps and Hitler? Michael Phelps can finish a race
What do you mean by that ? Why are you comparing them both ?
It's silly, really. Michael Phelps can swim a hundred meters and Hitler killed a lot of Jews during the holocaust.
You shouldn't joke about the Holocaust because it was a traumatic event. Joking about someone else's trauma creates an environment where people don't feel safe to share or express their emotions. You should be more empathetic toward Holocaust survivors.
What do you mean it was traumatic?
You should read about it to understand what jews had to go through during the holocaust. It's not something you should make jokes about.