Capitals winger Tom Wilson body slammed Artemi Panarin in the middle of their game on Monday ... rag-dolling the Rangers star on the ice -- and now, EVERYONE's pissed over it.
The wild scene all went down in Madison Square Garden ... wherein the 2nd period of the Washington vs. New York tilt, all hell broke loose near the Capitals' crease.
As a pile built up around the goal mount, 27-year-old Wilson jumped on Rangers star Pavel Buchnevich ... and then slid in a dirty punch that pissed off NY players.