People always say that I didn’t give up my seat because I was tired, but that isn’t true. I was not tired physically, or no more tired than I usually was at the end of a working day. I was not old, although some people have an image of me as being old then. I was 42. No, the only tired I was, was tired of giving in.Rosa Parks, whose simple act of defiance, refusing to give up her seat on a segregated bus 50 years ago, helped launch the civil-rights movement. Parks died this week at age 92.