Right off the bat, a warning: this video contains a lot of "f-bomb" swearing. Watch at your discretion.
But that's not why I found it interesting.
There's a lot that can be said about this video ... whether it's "self defence" or not ... about the posturing before a fight ...
... but what caught my eye was that "red shirt" put on a big display of "martial arts poses" in the lead-up to the action, but once the punches started getting thrown his technique went out the window and he basically threw haymakers until one landed and finished the fight.