That’s one of the ways you get allies—by looking like someone they can do business with. You could argue that this is unfair, that appearances shouldn’t matter, that people should be able to dress and behave however they want, that the only thing that should matter is a person’s character and the righteousness of their cause. And guess what? In arguing this you are proving the very real need for pragmatism. Because we’re not talking about how things should be. We’re talking about how they are.