What was Civil Defense supposed to do for Americans?

c 3 branches because idk why they had 3 well when:

you think of it there are still contrys with 3

so they can differentiate themselves from others as they saw themselves as the superior race. the star was basically a symbol that meant you are a less of a person than i am because of my race. the star was also degrading for those who had to wear it because they were aware of this and the nazis used the notion to make them feel less like a person.