What is this actually a picture of? I don’t get the joke.
I believe that’s R. Budd Dwyer; he’s pulling a revolver out of that envelope just before shooting himself in the head.
R. Budd Dwyer - Wikipedia

Trump doing that would be dark?

we still joke how Hitler wasn’t that bad, because by the end he killed Hitler.

The difference is that Dwyer did it on live television, in a highly publicized press statement. Cameras didn’t cut away.
Trump doing that would be so memeable though.
I’d buy a t-shirt for every unique camera angle.

Hope there is a slowmo hi res version.

Would make amazing album art

There was another recent shooting that was caught on camera and was being meme’d before the end of the day.