Chris Brown is a menace.

The day after roughing up Usher at the birthday party Usher was throwing for him Breezy has gotten into another altercation.

This one went down last night backstage during Missy Elliot's set at the Lovers & Friends festival in Las Vegas.

No word on who Brown was beefing with or what the argument was about.

However, if you see the now 34-year old you might want to stay out of his way.