Let me ask you something: what kind of person makes that kind of obvious faux pas on the stage at the inauguration of the President of the United States of America then doesn’t try to clarify or correct people who say it was a Nazi salute?

Any normal person would be mortified, and tripping over themselves to explain themselves or apologize. I would say that his actions (or more accurately, inaction) after the gesture cements it for me that there is zero point zero percent possibility that this was not intentional.

You are a fool if you believe otherwise.