POMONA (CBSLA)  —  It was a violent confrontation and it was caught on camera.

A man told police in Pomona that he witnessed what he thought was another man illegally dumping or setting up a homeless camp.

READ MORE: Día De Los Muertos Celebrations and Others Return To LA

CBS2/KCAL9’s Cristy Fajardo says what happened next was a block of cement, hurled into a windshield.

The incident played out in broad daylight — around 10:30 a.m. Friday. It also happened under a freeway overpass.

Police identified the man throwing the cement as Jacob Makwana. They also said he kicked the victim’s car.

Amos Young, the man inside the car, said it all started because Makwana didn’t wanna be filmed.

Young says he was driving to a meeting when he spotted three men pushing items through a chain link fence onto a vacant lot on Towne Avenue, next to the 60 Freeway.

READ MORE: Sigma Nu Fraternity At USC Suspends Member At Center Of Sexual Assault Allegations

He stopped — wondering again, what they were up to, and wanting to confront them if they were up to no good.

Young took out his cellphone and began recording.

That, he says,  provoked a rampage.

Police say Makwana 26, is wanted for felony vandalism.He left the scene before they arrived. Authorities believe he is homeless and likely still in the area.

Young is sharing his story because he believes Makwana was trying to intimidate him into silence. That was more reason he says when one sees someone potentially committing a crime, speaking out is the only option.

“We need to send a stronger message to criminals,” Young says, “you’re not going to violate, and just get away with it. Cause it’s hard for people to speak up. So knowing that I’ve spent my life helping many of these people get their lives back on track this one here, this one doesn’t want the help and he’s one who needs to be held accountable.”

MORE NEWS: USC Places Sigma Nu Fraternity On Interim Suspension After Reports Of 'Possible Drug-Facilitated Sexual Assaults,' Students Protest In Support Of Victims

Young’s car has several dents and a broken windshield.