This is from the link I posted above…
According to Sgt. Trent McKinley, public affairs officer for the Lawrence Police Department, police responded to The Cave at 1:53 a.m. Sunday. Officers saw several individuals fighting outside, McKinley said, including some who went back into the bar after seeing police arrive.
“Officers observed one individual on the ground motionless, get kicked in the head by another individual,” McKinley said in a release that did not name those arrested at the scene. “Officers handcuffed that suspect and placed him in a patrol car as other officers tended to the injured subject on the ground.”
While officers attempted to identify other victims, suspects and witnesses, McKinley said, “several individuals interfered with the performance of officers’ duties in questioning suspects as others interfered with arrests or attempted to incite the crowd.”
Four arrests were made, McKinley said, adding that the incident was still under investigation.
Coleman was arrested on suspicion of battery, according to the Douglas County Booking Log, while Traylor was arrested on suspicion of interfering with the duties of a police officer. Each posted $100 bond.
This article actually quotes a police spokesman so it is as close to the actual events as we can get. From the description, it sounds like Coleman was the one doing the kicking since he was the only one arrested on suspicion of battery. In these circumstances, the first thing police officers are trained to do is to get the situation under control to prevent an escalation and then take down statements from witnesses. Chances are that Traylor tried to talk/argue to/with the officers while Coleman was being arrested, was warned several times to stand back, which is standard police operating procedure under those circumstances, he did not and was arrested for interfering with the police.