The agony on Christian Angelo's face is clear to see in photos taken when violence erupted between Trump supporters and counter-protesters that afternoon.
"I'm getting hit by bear mace right here on the right," he recalls. "I didn't do nothing to nobody and I'm getting a face full of bear mace all over my right side."
Angelo turned out that day in support of Black Lives Matter. Angelo says he did cross over into the other crowd, but he didn't expect it to turn so violent.
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He says he ran from the crowd of Trump supporters after he was maced, only to be chased down again.
"Some of them were swinging at me," he said. "I know I got hit many times in the face."
He added that while he was yelling at a group of about 10 people, he got maced.
LAPD officers stood by as his fellow protesters rushed to his aid trying desperately to flush his eyes and face of the chemical.
"Everything was on fire. I had it all over my back and when they started pouring the water, it dripped down to my private area, on my backside - everything was on fire," he said.
RELATED: LAPD investigating after Black woman attacked by Trump supporters in downtown LA
Angelo says the officers' lack of action against those who attacked him is what has him so upset. He says the entire altercation was likely captured on camera by the surveillance system in the park where the trouble began.
"I'm taking this very personally because I know I'm not going to get any justice for my assault," he said. "If it were the other way around I would be in bars right now."
LAPD says it is investigating an assault during the protest, but it involves a woman getting attacked by the Trump supporters.
That demonstration in downtown L.A. came on the same day a pro-Trump mob stormed the Capitol building in Washington, D.C. and took over the House and Senate chambers, ransacking the place in a stunning scene.