Although no serious injuries were reported, seven people were arrested in the demonstrations.
Three were arrested on suspicion of assault; two others on suspicion of assault, destroying property and inciting a riot; one on suspicion of destroying property; and one for allegedly resisting an officer, UNC spokeswoman Carly Miller said in a statement.
In a message to the campus community, the university said none of the suspects were affiliated with the university. Administrators said the protest drew 100 people and that it was "highly charged."
North Carolina has become a focal point in the debate over Civil War-era memorials. UNC leaders, including the school's chancellor, Carol Folt, said state law had prevented the removal of the statue.