Rosa Parks was not a tired seamstress. More than a decade before that bus, she had joined the Montgomery NAACP and became its secretary. She investigated police brutality and murder of Black people. She documented rapes of Black women by white men that white sheriffs refused to handle. She raised funds for a young Claudette Colvin. She admired Malcolm, calling him “her personal hero.” They met several times. It’s safer to think of her as just the tired lady. But she was dangerous, in the best way. Today marks 70 years since, at the age of 42, she changed the world.