Video: Michelle Malkin and Group Attacked on Stage at Rally for Supporting Police

A large crowd of anti-cop demonstrators descended on a Back the Blue event in Denver on Sunday afternoon, blowing whistles, banging drums and, in some instances, throwing punches, forcing police to intervene before the gathering was effectively shut down early, according to reports.

The sixth annual Law Enforcement Appreciation Day event was scheduled to be held Sunday from 3 to 6 p.m. at the amphitheater in Civic Center Park in Denver. It was advertised by the Pro Police Rally Colorado Facebook page.

Randy Corporon, an attorney who helped organize the "family-friendly" event involving food and live music by Becker Band, said Denver Police Chief Paul Pazen had asked him to either reschedule or move the pro-police gathering from its normal location, citing a risk that officers could be put in danger as Black Lives Matter demonstrators planned a counter-protest also at the Civic Center Park.

“He was agitated that we're going to get his officers hurt,” Corporon told the Denver Post.“My response to him was that he should allow his officers to do their job and if people are down there breaking the law, to stop them. Because they'll have nothing to fear from us.”

“We’re exercising our constitutional right to peacefully assemble, and we have no intention of giving up that ground to these domestic terrorists,” he said before the event. “This chief of police is the guy who walked hand-in-hand with Black Lives Matter.”

“If you agree that the domestic terrorists don't own the streets and our parks in my birthplace, once beautiful Denver Colorado, please join me,” Corporon tweeted Saturday advertising the event the next day.

Shortly after the band began to play around 3 p.m. on Sunday, anti-police demonstrators, who greatly outnumbered the group who had shown up to show their support for law enforcement, moved into the amphitheater space and banged drums, blew whistles, clanged pots, clapped and shouted obscenities to drown out the music, according to the Denver Post.

Several people threw punches. Photos showed clashes between women from opposing sides pulling each other’s hair. One man was bloodied and had a large gash in his forehead.

Officers on duty to monitor the event tried to form a line between the two groups but could not completely separate the opposing sides. Denver Police later confirmed they used chemical sprays in at least three separate instances to help disperse the crowd.

Conservative blogger Michelle Malkin posted several videos documenting the events Sunday as they unfolded. She said Black Lives Matter protesters swarmed the stage and attacked several women attending the pro-police rally, some using collapsable batons.

Acting Deputy Homeland Security Secretary Ken Cuccinelli reacted to the “Outrageous violence” seen in Denver Sunday, tweeting “These tyrannical, left-wing anarchists hate free speech. If you do not agree with them, they believe you must be beaten down – literally.”