Colorado Revised Statutes Title 18. Criminal Code § 18-9-107. Obstructing highway or other passageway

(a) Obstructs a highway, street, sidewalk, railway, waterway, building entrance, elevator, aisle, stairway, or hallway to which the public or a substantial group of the public has access or any other place used for the passage of persons, vehicles, or conveyances, whether the obstruction arises from his acts alone or from his acts and the acts of others; or

(b) Disobeys a reasonable request or order to move issued by a person the individual or corporation knows to be a peace officer, a firefighter, or a person with authority to control the use of the premises, to prevent obstruction of a highway or passageway or to maintain public safety by dispersing those gathered in dangerous proximity to a fire, riot, or other hazard.