Then he chose the wrong president to salute to.
Coming back en 2026-Viva Venezuela!

I didn't see him in your clip. I did, however see a better clip that showed him saluting him. Gibson was never in military service, nor was Trump. Gibson looked like an actor pretending to salute…which is fine. He meant well. He's just an actor whose main attraction – as is clear by his faltering career – was his face.
Now back up your "Nazi" statement. Be sure to make direct references to what happened in Nazi Germany. You know, like concentration camps for the unvaxxed and that kind of thing that's been discussed in this country – not under Trump, but under Biden. And if you mention kids in cages, I'll laugh. Biden's lapdog press just hasn't covered what's happening at the border. If AOC knew, she'd stand at a parking lot fence and cry.

I know that I don't care if Mel Gibson saluted him.
He is 100 percent entitled to his own thoughts, views, feelings, and opinions on anything and everything including Politics just like everybody else is.

OK
Ding Dong
!

He saluted him at a UFC match.

Context?
Ding Dong
!