A video showing teenagers allegedly assaulting a 69-year-old man, knocking him unconscious, has made its rounds on social media and has led to the arrest of five minors.

The video was shot Tuesday outside a Cupertino McDonald’s off North Stelling Road. Deputies said a man saw the teens in the crosswalk and told them to stop horsing around because they could get hurt.

That’s when one of the teens allegedly spit on the man and seconds later, they assaulted him, deputies said.