I found this post on Harvey Fierstein's Facebook update just now. It is as applicable today as when Truman issued his executive order back then:
Does anyone remember what Harry Truman did? He knew it was the right thing to integrate the armed forces. Congress threatened action against him. The Chiefs of Staff threatened to quit. He said, "I will see your resignations on my desk." And then he integrated the armed forces with an executive order. There were NO resignations. Congress did not act against him. And he changed the world by doing the right thing.