The pro-police demonstrators outnumbered the counter-protesters, and fights broke out as the two sides moved into a grassy area between houses , video footage shows. It was not clear how the fights began, but the recordings show about a dozen people wrestling and fighting in a ditch.
A person in a red shirt is shown using an American flag mounted on a pole to spear and pin to the ground a person dressed all in black. One man swings what looks to be a baton, striking at another man. The footage shows police arrive within minutes and detain at least two people.
The people arrested and cited were aligned with both sides. Three people were arrested for disorderly conduct, including one who faces an additional charge of illegally possessing a weapon and a second person who faces a charge of resisting arrest. A fourth person was cited for criminal tampering.
An investigation into the fights is still ongoing, because some people who were involved in the melees left the scene before officers arrived, Detective Erin Feit told The Denver Post. Witnesses who have video or other information on what happened were asked to contact the police.