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conformist - A person who behaves in accordance with prevailing standards or customs, rather than doing things that are different or original.

The hippies attracted people who didn't want to be conformists to the regular society, but actually they were becoming conformists to the hippie way of life.
stride - Progress or advancement: A significant step forward in development or improvement; or a long step or pace: A way of walking with long, decisive steps.

The Supreme Court's decision was a signfication stride in the movement towards desegretation.