Watch as an Anti-Trump protestor set another woman's hair on fire.

A few Donald Trump supporters came face-to-face with the protestors in D.C. and when they attempted to take a photo of in front of them, one of the girl's hair was intentionally set on fire. 

Luckily a guy noticed what happened and was able to quickly put the fire out. Not only did a Trump supporter come to her aid, but so too did a few Anti-Trump supporters.

A few of the Anti-Supporters admitted that what happened was wrong and that the protestor went too far.

Whatever happened to peaceful protests? Which are protected under the U.S. Constitution.