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FILE - In this May 4, 1970 file photo, Mary Ann Vecchio screams as she kneels by the body of a student lying face down on the campus of Kent State University in Kent, Ohio . National Guardsmen had fired into a crowd of demonstrators, killing four. (AP Photo/John Filo, File)

Iconic protests: Remembering the brave

History is wrought with acts of courage by unheralded individuals to bring about justice and change in society.  Recently in Turkey and Brazil, images of violent demonstrations have been beamed across the globe which leads us to remember and honor other brave souls who have paved the way with their acts of protest.