The Einsatzgruppen were small mobile mass murdering units deployed beyond Germany's borders, not on German citizens. Whereas, subjugation of liberals and other Germans opposed to Nazism was the work of the Gestapo and SS, and the camp system. Einsatzgruppen were attached to the complicit Wehrmacht.
Think you need to read a bit of relevant history. Wiki is basic, so you should start there.
It literally says “in German occupied Europe” so you might want to read it before sharing. You made an analogy with an internal force, which they weren’t, so I politely corrected you, now you double down and insult me. End of conversation.