What groups were fighting the Zoot Suitors during the riot?

The conflicts were rooted in racism against Mexicans and Mexican-Americans. While most of the violence was directed toward Mexican American youth, African American, Italian American, Filipino American youths who were wearing zoot suits were also attacked.

The Zoot Suit Riots were a series of violent clashes during which mobs of U. S. servicemen, off-duty police officers and civilians brawled with young Latinos and other minorities in Los Angeles.

Explanation:

The Zoot Suit Riots were a series of conflicts on June 3-8, 1943 in Los Angeles, California, United States, which pitted American servicemen stationed in Southern California against Mexican-American youths who were residents of the city. It was one of the dozen wartime industrial cities that suffered race-related riots in the summer of 1943, along with Mobile, Alabama; Beaumont, Texas; Detroit, Michigan; and New York City.