A Quiet "No"
Parks did not refuse to move because she was physically tired — she later said what she was tired of was giving in again and again. When the driver ordered her to rise, she simply said, calmly, "no." That one word got her arrested, and united the whole Black community in a bus boycott lasting 381 days, until the Supreme Court ruled bus segregation unconstitutional. History sometimes turns on one person’s refusal.