Rosa Parks, a poor, humble black woman, sparked the civil rights movement when
she refused to relinquish her seat on a bus to a white person in Birmingham,
Ala., in 1955. Moses, another introvert, was led by God to go to the Egyptian
pharaoh and seek his people’s freedom. Lech Walesa, an electrician, organized
illegal protests in the Gdansk, Poland, shipyard throughout the 1970s. He was
arrested numerous times, fired from several jobs and placed under constant
surveillance. His efforts bore fruit in the Solidarity trade union which led to
the collapse of Eastern European communism.