A disturbing viral video of a white police officer in Northern California pinning a 14-year-old black boy on the ground, and repeatedly punching him in the chest during an arrest for cigarette possession, has sparked outrage online.

The footage was shared on social media by the boy’s family. It showed the unnamed Rancho Cordova police officer striking the teen repeatedly as he struggles on the ground. The officer at some point pinned the boy on his neck. 

“There is not one reason that validates a full size armed man, to sit on, punch, and try and break the arms of a child,” Black Lives Matter Sacramento wrote Tuesday on Twitter, Daily News reported.