race riot
From Longman Dictionary of Contemporary Englishrace riotˈrace ˌriot noun [countable] SARviolent fighting between people of different countries, religions etc who now live in the same countryExamples from the Corpusrace riot• Now however, a miniature version of the race riot that Gallagher had predicted exploded on campus.• From her seat above the town, Clappe watches the race riot.