When you think about the term "social justice", what comes to mind and why

When I think of social justice, I think of the brave individuals that crossed the bridge in Selma to further their rights as American citizens. They were ridiculed, spit upon, and sneered at by many of their fellow citizens who did not want to share their privileges with them. They were beaten and sometimes killed by the police that were paid to protect the citizens of this nation. Were these individuals not citizens too? Had they not been asking for the right to vote and to go to good schools for years, only to be denied this constitutionally guaranteed right? Were they not asking for “social justice?” At what point would it be acceptable for them to cross a bridge to cry out for justice?

i have 15 more questions to answer and i’m a english person

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