The North Metro Drug Task Force had a warrant to arrest David Martinez on a charge of distributing a controlled substance. Sgt. Steven Holton and Detective Ben Russell of the Westminster Police Department staked out Martinez’s tattoo shop.Martinez arrived at the back door and lit a cigar, which he was holding in one hand while holding what looks like groceries and a six-pack in the other.Holton, dressed in jeans, a T-shirt, and sneakers approached him swiftly from behind, grabbed him, stiff-armed him in the throat, and slammed him into a wall. Russell, dressed in shorts, a T-shirt, and sneakers approached, helping Holton continue attacking Martinez, then dragging him down to the pavement, choking, handcuffing and arresting him. The attack came so fast, so suddenly that Martinez never raised his hands toward the cops.The video is unedited but has no usable sound, which makes it unclear whether Holton identified himself as a cop