Pringle says the policeman slapped the phone out of his hand. It allegedly broke apart, but the footage survived.
Pringle alleges that he was then assaulted by the other policeman.
He told Photography is Not a Crime: "Blood was everywhere. I was laying on my stomach and he had one knee on my back and the other knee on the side of my face."
Pringle says he was held in jail till 4 a.m.
The San Diego Police Department has yet to comment on these events, but I have contacted them in the hope that they will.
One can, perhaps, imagine that it is possible to hit someone over the head with a cell phone. I am not sure how much damage would be done by a Samsung Galaxy, but I would certainly not recommend that anyone find out.
There seems nothing in this footage to suggest that Pringle was being anything other than an ordinary citizen standing up for his basic rights.