The leftist tactics against Republican front runner Donald Trump took a nasty turn Friday and the people who shut down his Chicago rally did what they do in that city: fire guns into the air.

Video published by Conservative Outfitters shows a protester who boasted on Twitter about shutting down the rally celebrating his work by firing what appears to be an Uzi at random.

The man identifying on Twitter as Jamaal Williams, tweeted “We celebrating shutting down #TrumpRally.”

His profile image shows him holding what appear to be both an AK-47 and an Uzi.

“You might know what’s goin’ on,” he said, before firing at least eight rounds into the air.

He also tweeted several racist statements after the rally, writing, “I got a bunch of mad crackers in my face now #TrumpRally,” as well as “#TrumpRally gonna #FeelTheBern we shutting this bitch down.”

The Friday rally at the University of Illinois-Chicago was shut down due to “security reasons.”