Police say a member of the Kennedy family was arrested after a bar fight in the Colorado resort town of Aspen. Police say 22-year-old John Conor Kennedy was charged with disorderly conduct in the Thursday morning scuffle, the AP reports. Kennedy is the oldest son of Robert Kennedy Jr., an environmental activist, and the grandson of Robert Kennedy. Police say Kennedy and another man were fighting in the street and rolling around on the ground when officers tried to separate them. Officers reported seeing Kennedy punch the man in the head four or five times. According to TMZ, Kennedy, who used to date Taylor Swift, told police that the fight began after the man insulted his friend with a homophobic slur. (More John Conor Kennedy stories.)