In additional video footage, Boucher, who is white, can be seen hurling racist insults at two black bystanders in broad daylight. He appears to be wearing a cream-colored suit that has visible drink stains.
"Shut up, slave! Do not talk to me!" Boucher yells at the two black men. "Your children are disposable vermin!"
Someone who appears to be a Starbucks employee tries to intervene in the video, but Boucher continues yelling toward one of the men, who is walking away: "Get on all fours! Do not walk off on two legs!"
Shortly after that, police said, Boucher punched a 59-year-old man without provocation. The man, who was reportedly homeless, was taken to a hospital with an eye injury, according to ABC7 News.
Bystanders detained Boucher near the Starbucks until officers arrived and arrested him, police said.
Gerald Mitchell, the 30-year-old man who was spit on and who helped detain Boucher, told the Chicago Sun-Times in July that he hoped the belligerent man learned something from the experience.
"I try to see the good in people," Mitchell told the newspaper. "I don't know his background. I would try to give him the benefit of the doubt. I just know it was downright wrong. Disgusting."
