Irizarry is shown in the video wearing a sleeveless shirt that is made to look like the Puerto Rican flag, and has the name of the USA territory printed on it.
The U.S. Army Corps of Engineers plans to begin removing mega-generators providing backup power at Puerto Rico's power plants as soon as next week, and island officials are concerned this is taking place in the middle of hurricane season.
Mia Irizarry posted a video of the June 14 incident on Facebook and showed that she was wearing a shirt that looked like the Puerto Rican flag.
'You're not going to change us, you know that, ' Trybus tells her in the clip.
Irizarry, who remains polite throughout the confrontation, calling the man "sir", then asked a nearby park police officer to help, saying "I am renting this area and he's harassing me about the shirt that I'm wearing".
She responds that she's just at the park for a birthday party. "If you're an American citizen, you should not be wearing that shirt in America". "Are you a United States citizen?" he demanded as Irizarry moved out of the pavilion to avoid him.
He then asks her twice if she is a citizen, which she says she is.
"Can you please step away from me?"
The officer can then be seen talking to Trybus, who gesticulates back and tells him to "shut the f*** up". A female officer asked for the man's ID and can be heard in the video saying, "You don't come here harassing people". "My point is, why are you wearing that?" he said.
The agency adds, "The intoxicated individual involved in the incident was arrested and charged with assault and disorderly conduct".
"No one should feel unsafe while visiting our preserves", Figel said.
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The Forest Preserves wrote on Twitter on Monday that the investigation of the officer is "ongoing" and that he'd been assigned to desk duty "pending the outcome".
Later, more police arrive and Irizarry says she still doesn't feel safe. Even police officers have a right to a fair process.
"We will be looking into this incident as our offices in DC are in contact with local and state authorities, demanding that this officer be expelled from the police force", Rossello said.
On Monday, Puerto Rico's Governor Ricardo Rosselo tweeted an angry reaction about the incident.
"I am appalled, shocked & disturbed by the officer's behavior", Rossello tweeted.
Irizarry is seen filing a formal complaint and says that the initial responding officer did "absolutely zero".
And, adding a bit of customer relations to help make things right, the county gave Irizarry zoo passes to the Brookfield Zoo, which is owned by the Cook County Forest Preserve District.
'People have just as much right to be here as you do, ' she can be heard telling him in the clip.
The man continues ranting, while the officer doesn't acknowledge Irizarry's plea. Although Puerto Ricans are USA citizens, they must register in one of the 50 states to vote in presidential elections. In response, the officer remains at a distance without intervening.
"This is not the America we all believe in", he tweeted.