A man who sought to document the dreadful behavior of a group of teens was beaten and robbed Sunday, as the kids were less than pleased to have their errant acts caught on camera.

Police say that the attack happened at 5:10 p.m. Sunday, on the 100 block of Post Street, which is between Kearny Street and Grant Avenue.

According to the San Francisco Police Department, six teens (two 15-year old males, a 17-year old male, two 14-year-old females, and a 16-year-old female) were "jumping on cars and throwing water bottles" when they were spied by a 51-year-old man who "began to video [the suspects'] actions on his cell phone."

When the suspects realized what the man was doing, they confronted him, according to the SFPD.

The six teens "began to hit" the man, police say. They also stole his cell phone, according to the SFPD.

Police say that they were able to swiftly track down the suspects, and all were arrested Sunday evening. The victim suffered injuries police say were not life-threatening, and is expected to recover.