The mayor's son Dante made a surprise appearance at a student protest Friday involving the actions of the police. NY1's Lindsey Christ filed the following report.

Students held a protest Friday morning to criticize the actions of police and safety officers in their school. Arriving late to the rally was an especially notable 17-year-old: the mayor's son, Dante de Blasio. 

Dante traveled to Park Slope Collegiate High School with his debate team from Brooklyn Tech, but he missed the marching and speeches. 

The mayor's son and his teammates declined to comment on camera. After talking with students from Collegiate, they left. 

Dante's surprising appearance Friday follows months of tense relations between the mayor and the NYPD that recently have eased. 

Dante took a visible role in his father's mayoral campaign, but he has not been involved in any known advocacy since then. The only headlines he's made recently came from winning a state debate championship.  

Students at Collegiate have been unhappy about the conduct of police and unarmed safety officers at the school, as well as the use of metal detectors there, policies that the mayor has broad control over.

Friday's protest was sparked by a dispute about, of all things, a Collegiate student's eyewear. 

"His glasses had broken, and so he had fixed them with a little pin," said Katie Mosher-Smith of the Park Slope Collegiate Parent Teacher Association. "And he'd been wearing this pin for several weeks. I'd seen it on him a few times. 

On Thursday, safety officers asked the student for his glasses, saying the pin could be considered a weapon. A scuffle followed, and the student was handcuffed by police, who, according the PTA, ignored the principal's pleas to leave him alone. 

The student was given a summons for elbowing a school safety officer. The NYPD now says the contact apparently was inadvertent, and that internal affairs is investigating. 

"I feel like students in our school are not bad. Like, why are they treating us like criminals? We're not criminals," said Feyisola Oduyebo, a student at Park Slope Collegiate.

Dante, of course, could bring his grievances to his father, the mayor. It wasn't clear if he will. City Hall declined to comment.