Ok, so I know these gifs are really shitty, but if you can’t figure out what’s going on, let me clarify.
The first gif shows members of the audience at a Dropkick Murphy’s concert up on stage while the band plays TNT (ACDC). I know it’s not easy to see, but one of the people on stage started doing a Nazi salute. You’ll also notice the bassist of the band, Ken Casey, walking over to the man.
In the second gif, you’ll see Ken react to the man by knocking him on the floor and hitting him with his bass. He later goes on to tell the audience “Nazi’s are not fucking welcome at a Dropkick Murphy’s show.”