He asks her whether she is an American citizen, even though Puerto Rico is a USA territory and its residents are US citizens.
While Puerto Rico isn't a US state, it's a commonwealth and has its own constitution.
Mia Irizarry, who said she had rented a forest preserve pavilion for a birthday party, posted the 36-minute video to her Facebook page on June 14.
"We don't know what was happening outside the video; we don't know what was going on inside his (Conner's) head at the time", the attorney, Tamara Cummings, said Thursday.
The police officer turned and walked back to his police auto without responding, as the irate man followed her out onto the grass.
"You should not be wearing that in the United States of America", the man shouts, adding, "Are you a citizen?"
"You're not an American", Trybus continues to tell Irizarry. He asks her if she is an American citizen, to which she responds that she is. In the video, the woman can be heard asking the officer, "I do not feel comfortable with him here; is there anything you can do?"
A Hunter College student from Somers who volunteered to help fix and reconstruct many homes in Puerto Rico decimated by Hurricane Maria shared her experience with News 12.
"'Is she an American citizen?" he then asks the officer. Not long after arriving, a middle-aged white man approached her and began to harass her about her shirt - a red, white and blue tank top designed like the Puerto Rican flag.
In the statement, Forest Preserves said the man, who they did not identify, had been arrested and charged with assault and disorderly conduct.More news: Liverpool's Jurgen Klopp backs Dejan Lovren after Croatia World Cup run
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The officer in the video, whose name has not been released, has been assigned to desk duty pending the outcome of an ongoing investigation.
As more police arrive, Irizarry tells them she still doesn't feel safe as the man continues his tirade.
Puerto Rico Governor Ricardo Rossello saw the video and also condemned it. "Can you please grab him?" to which he turns his head and walks in the opposite direction.
'People have just as much right to be here as you do, ' she can be heard telling him in the clip. "I am appalled, shocked & disturbed by the officer's behavior", he said.
'That officer did absolutely nothing he did absolutely zero, ' she says in the clip.
Caldwell Woods is part of the Forest Preserves of Cook County. The video shows him asking whether or not the woman has USA citizenship. Now, an investigation has been opened into the incident, where the man-who was visibly drunk-verbally berated the woman and called her shirt un-American. "In this case, a USA citizen questions the citizenship of another United States citizen and American law-enforcement just sits back and watches".
"I am very sorry for the experience the young woman had to (endure) and I'm further troubled by the lack of response and action by the initial officer on the scene".
Rossello added that Cook County is home to a diverse population and he believes Cook County Board President Toni Preckwinkle will handle the incident properly.