You might have to watch this a few times to catch it:

Black shirt, white hair, white beard. Definitely Mel Gibson, definitely saluting Trump as he walks past.

Another angle:

Someone else posted his fit to triple-verify that it was indeed him:

Betcha can't guess what happened next!

That's right, full-fledged lib meltdown. Tearstorms.

Here are some of the gyrations that got the most traction on Twitter:

Oooh calling people you dislike "Nazis" ... how extremely original.

First off, fella, you actually choose to go by the name "Brooklyn Dad Defiant!" 😂 and secondly, Mel Gibson is worth half a billi so yeah I dunno about his career being "dead."

What, one of the best movie makers of this generation?

This person wants Mel Gibson's life to be utterly destroyed because he saluted a former US president. Think of the sociopathy going on here.

ROFL. To the gulags with them!

The "UFC game" ... yeah lady you can stop talking.

This is now a hallmark of the leftist worldview: If we disagree with you, you are as bad as the literal Nazis and you deserve to die!