Racist thinking among and between minority groups does occur; examples of this are conflicts between blacks and Korean immigrants, notably in the 1992 Los Angeles Riots, and between African Americans and non-white Latino immigrants. There has been a long running racial tension between African American and Mexican prison gangs, as well as significant riots in California prisons where they have targeted each other, for ethnic reasons. There have been reports of racially motivated attacks against African Americans who have moved into neighborhoods occupied mostly by people of Mexican origin, and vice versa. There has also been an increase in violence between non-Hispanic whites and Latino immigrants, and between African immigrants and African Americans.