"Violent clashes" refers to intense and aggressive confrontations between groups of people that involve physical fighting, aggression, or fighting with weapons. Full definition
In Istanbul, until 2009, May Day (May 1) celebrations had resulted in violent clashes between police and workers who have been prohibited from commemorating this day in Taksim Square.» (travelinsurancereview.net)
Virginia Gov. Terry McAuliffe temporarily blocked protests at the statue of Lee in a residential neighborhood in Richmond following violent clashes in Charlottesville that led to three fatalities. (nystateofpolitics.com)
After violent clashes with protesters and growing international pressure, the President, Paul Biya, was forced to legalise multiparty politics later that year. (newscientist.com)