Irizarry can be heard saying that Puerto Rico is part of the United States and Trybus approaches her multiple times.
In a now-deleted Facebook video Irizarry had posted, a man from the other group can be seen coming toward Irizarry, saying, "You should not be wearing that in the United States of America".
Mia Irizarry who was celebrating her 24th birthday at the park last month, was approached by a man, a park police officer, who repeatedly asked her as to why she was wearing a sleeveless Puerto Rico flag shirt?
The harassment continued, as Irizarry repeatedly called on the officer for help, asking, "Is there anything you can do?"
'You're not going to change us, you know that, ' Trybus tells her in the clip.
'Are you educated?' Trybus asks her in the clip.
"No one should feel unsafe while visiting our preserves", Figel said.
O'Connor has been assigned to desk duty while his actions are investigated.
The man in the video was arrested and charged with assault and disorderly conduct, according to the Forest Preserves agency, which described the man as intoxicated.
She plans to interview all officers at the scene as well as Irizarry and said the video will be used in future training exercises by the Forest Preserves.
"Officer, can you - I'm renting this area and he's harassing me about the shirt that I'm wearing", Irizarry says in the video. You're not going to change the United States of America. Like this guy is just walking up to me.
'That officer did absolutely nothing he did absolutely zero, ' she says in the clip.
"Because I can", she answered, before appealing to the police to intervene, saying she had rented some of the park's outdoor seating.
For several minutes the man berates Irizarry and at one point stands a few inches from her.
'If she's an American citizen, why is she wearing that s**t?' Trybus shouts. A female officer tells Trybus, "You don't come here harassing people... when you're drunk you don't belong here".
Roselló criticized the officer's behavior but expressed faith that local authorities would appropriately address the incident, which seems to have taken place in Cook County, Illinois.
"After the June 14 incident, we immediately launched an investigation pursuant to our personnel policies into the response of our officer". "He failed to deescalate the situation and therefore did not ensure a citizen's safety", Rosselló tweeted. "This is not the America we all believe in". "Then you should not be wearing that", he said.
He was referring, of course, to President Trump's visit to a hurricane-ravaged Puerto Rico in October, in which he tossed rolls of towels into the crowd as if they were basketballs. While citizens of the island cannot vote in United States presidential elections, those born there are still US citizens.