Protest: This term refers to a public demonstration expressing strong objection or disapproval toward something.
Public Space: This term refers to areas owned by either federal, state, or local governments where people can gather freely such as parks, sidewalks, and streets.
Expressive Purposes: This term includes activities like picketing, carrying signs with messages on them, chanting slogans during demonstrations - basically using visible actions to convey thoughts or feelings about an issue.