What groups were fighting the Zoot Suitors during the riot?

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.

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.