Sentence:  The marvelous new militancy which has engulfed the Negro community must not lead us to a distrust of all white people, for many of our white <WSD>brothers</WSD>, as evidenced by their presence here today, have come to realize that their destiny is tied up with our destiny. 
Meaning of the word marked with <WSD> tags:  Somebody, usually male, connected by a common cause or situation.