The Nazis felt their race was superior to everyone elses
I'm not quite sure what your asking but the Italians just like the Nazi's had many concentration camps established to exterminate Jews, Slavs, Croats and all others deemed by the Nazis and facist Italians to be inferior or enemies to the Axis Powers.
I want to exterminate the termites in the floor of my house. I will exterminate the people that work on my third floor work area.
The Nazis did what they did to the Jews
1. because they are dangerus and because some people eat them.
bogaloo why do you want to know
The Jews
They wanted to exterminate all the Jews and rid Europe of all of its Jews.
they didn't want the public to know about it
Because it was there.
yes
yes..why else would he have been trying to exterminate everyone who wasnt the perfect race?
Well, seeing as their vocabulary consists mainly of "EXTERMINATE!" my guess is that you wouldn't want one as a pet.