>why the Germans wanted them rounded up and exterminated?
because most people are retarded and brainwashed by propaganda coming out of the TV.
Fun fact: Nazis released Rothschild bankers, but kept the others in jail.
Fun fact: the "Einsatzgruppen" that murdered tons of people in Eastern Europe had official orders stating "kill any Soviet political commissar" plus anyone these retarded so called soldiers considered suspicious of being one.
https://en.wikipedia.org/wiki/Commissar_Order