You've been conditioned to expect the POTUS to act and speak in a certain way - that doesn't mean there is only one "correct" way for a President to act and speak. The early political leaders of the US were not teleprompter-reading empty suits who always used cordial and politically correct language, they were often blunt, harsh and pulled no punches. Thomas Jefferson on his opponet John Adams: “a hideous hermaphroditical character which has neither the force and firmness of a man, not the gentleness and sensibility of a woman.” Imagine Trump saying that now?
So what was the racist comment?
I haven't seen what the racist comment is, nor have I called Trump a racist based on what was alleged to have been said today.
I don't need to imagine Trump saying something like that, given he already made a very clear joke about someone shooting Hillary Clinton.
I think you want a society where people, especially people in power can do and say what they really think. I don't think you understand the importance of tact. I mean, you wouldn't tell your boss you thought he or she was talking shite, would you? You'd approach it tactfully. It's the same principle here.
His office is a prestigious one, and at the very least, he should act with dignity.