Of course, not every act of defiance is safe or guaranteed to make a difference. Sometimes it comes at real personal cost and some people still choose to act even when the impact isn't certain: think ...
Seventy years ago, Rosa Parks refused to sit in the back of a bus, sparking the Montgomery bus boycott. Montgomery, Alabama, and other cities will commemorate the historic act of defiance Monday.
Seventy years ago today, Rosa Parks, a 42-year-old African American woman, made the decision not to give up her seat for a white person. The act would ignite a movement. (SOUNDBITE OF ARCHIVED ...