There was also "Mod Squad," whose leftist bias was quite pronounced.
"All in the Family" was obviously intended to make conservatives look like a-holes.
It sort of backfired, Meathead was not a likeable character, even Lionel called him out, because all Meathead wanted to do was talk about race issues with him...."Why don't we ever talk about the weather? Black people have weather too, you know!"