A security staffer who got dragged into a bar fight he was trying to break up just proves the old adage is true ... no good deed goes unpunished, and sometimes you gotta kick ass.
Check out this wild footage, obtained by TMZ, showing an absolute melee going down late Friday night/early Saturday morning at a joint called Shorts Bar & Grill out in Fairport, NY ... where we're told 4 dudes went at it right on the floor as the evening tipped into midnight.
As exciting as that was .