[Alouette]

nobody ever talks about all the other symbols except the yellow star and the pink triangle.

I think they absolutely should mention the other symbols. Well maybe not the last 2.

Purple triangle=Jehova Witnesses or evangelical Christian
Brown triangle=Gypsies
Red triangle=Communist
Black triangle=common criminal

[AmishDude]

Is there a web page with pics of them? Do they have any estimates of numbers?