Mine is definitely the Rockets (when they are semi relevant) and for stuff such as this. In general, their fans are the worst - in a game they clearly benefited from some dodgy calls (particularly from female ref), some dude manages to manipulate a video and all the npcs on that sub buy into it.
A close second right now is the Suns.
mavs have zero beef with the rockets since the two teams never been good at the same time, except for a little slice of the late 80s