During Game 5 of the Bulls-Celtics series, a couple of rowdy fans underneath the basket clearly had a disagreement about something and decided to let violence solve their dispute.

Bulls writer Sean Highkin posted on Twitter right after the fight happened.

Then video of the incident surfaced on Instagram.

#letsgoceltics #tdgarden #celtics #fight #playoffs

A post shared by Catherine Xu (@x1x2x3c4) on