George Wallace and Rosa Parks could hardly have been more different in terms of their beliefs on racial issues. However, you can argue that they were similar in their willingness to stand up for their beliefs in the face of opposition.
Rosa Parks, of course, was an activist in the cause of racial integration. By contrast, George Wallace was an ardent segregationist. She started the Montgomery Bus Boycott, he said "segregation now, segregation tomorrow, segregation forever." Different though they were, they were both willing to fight for what they believed. Parks was willing to commit acts that were illegal because she thought the laws were unjust. Similarly, Wallace was willing to defy the federal government when he thought its actions were unjust.