Houston rapper Lil Flip was performing at Denver's 4/20 concert on Saturday at Civic Center Park, which was interrupted by gun fire. Police reported that three or four shots were fired, injuring two people and a dog. 

Police didn't release any information on a motive, or a suspect in the shooting, causing pandemonium which was all caught on tape. A woman can be seen being treated for her wound, while other festival goers hightail it out of the vicinity. 

Lil Flip was also filmed taking notice of the shooting, and saying "Hol up! They shooting..like Nas" before running off the stage. He also tweeted about the incident, writing "I am just grateful that no one was seriously hurt. ...and FOR THE RECORD, the incident had NOTHING to do with the #420 in #denver." 

Source: ddotomen.com