The president of Chicago’s Fraternal Order of Police lodge defended protesters at the U.S. Capitol on Wednesday. 

“There was no arson, there was no burning of anything, there was no looting, there was very little destruction of property,” John Catanzara told Chicago public radio station WBEZ. “It was a bunch of pissed-off people that feel an election was stolen, somehow, some way.”

Catanzara supported concerns about the election being stolen and said the frustration drove people to act. 

“I don’t have any doubt that something shady happened in this election,” Catanzara said. “You’re not going to convince me that many people voted for Joe Biden. Never for the rest of my life will you ever convince me of that. But, again, it still comes down to proof.”

“Evidence matters,” he added. “Until that appears, shame on them for what they did, but it was out of frustration.”

On Wednesday, Trump supporters gathered for a Save America March in Washington, in protest of the unfair election.  A group of protesters later breached the Capitol Building sending Congress into chaos, which left four people dead and law enforcement injured.

Catanzara said the unrest was “very different than what happened all across this country all summer long in Democratic-ran cities, and nobody had a problem with that.”

Catanzara also addressed some media and politicians accusing the protesters of treason. “If the worst crime here is trespassing, so be it. But to call these people treasonous is beyond ridiculous and ignorant,” he said.

Meanwhile, former New York City Police Commissioner Bill Bratton said on Thursday the Capitol police’s response to the Capitol protest was a “colossal failure” and called for an investigation. 

“This was an awful day for America and one of the worst days for American law enforcement,” Bratton said. “And going forward, one of the good things coming out of this [is] there’s so much video, so much [to] analyze on social media. What was the organization in this crowd, in this mob, with the many factions that are working here?”

Videos on social media showing police officials opening barricades for protesters raised concerns of an organized activity. 

According to the New York Post, at least two known antifa members infiltrated the Capitol demonstration. They disguised themselves with pro-Trump clothing to join the rioting and incite violence so that the president would get blamed.

Rep. Mo Brooks (R-Ala.) has revealed mounting “evidence” that antifa members helped orchestrate the breach. He urged people not to “blindly accept #FakeNewsMedia claim fascist ANTIFA not there.”