What does it mean when the supreme court declares a law unconstitutional?

Newspaper started by john campbell:

George herbert mead argued that the self develops through interactions with others. do you think that your personality or self developed through your interactions with others (parents, friends, teachers) or was it something that you were born with? give an example from your life to support your view.

This description of the "firm league of friendship" of states is a quotation from the