In the greater US involvement in the Vietnam war, Richard Nixon changed opposed the war but changed his mind after ships were fired upon in 1964.
War refers to the conflicts between governments, states, societies, or groups.
Many people opposed the Vietnam war. There are thousands of people that become radicalized in a largely non-violent diverse culture. Richard Russell was one of them that opposed greater US involvement in the Vietnam war.
Therefore, D is the Correct option.
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