Sorry, if you are going to re-define 'hurting people' to mean 'making a modest political donation to a mainstream position that some argue is discriminatory' I don't know what to tell you. This hard line perspective stifles an open society. In this case, money is speech, and regardless of how wrong it is it's not the kind of speech I'd classify as harmful. ("Fire in a crowded theater.")
What's hurt people in this situation is to remove them their right. If you do an action with the goal to remove right from people, even if it's small, even if it's really indirect, if you do it with the goal to remove right from people, then yeah I believe it's wrong.
We are all equals, we should have equals rights. Having equals right doesn't hurt anyone but having different rights does.
