Suns and Clippers fans got into a VIOLENT altercation during the first game of the two teams' playoff series Sunday ... and the insane fight was all caught on video.
The wild action appeared to go down in the bowels of Phoenix Suns Arena in Arizona ... when two Clippers fans got into a screaming match with a bunch of Suns supporters.
You can see in footage filmed by a bystander ... the two LA fans -- rockin' Kawhi Leonard jerseys -- yelled for several seconds, before they let their hands fly.