Hispanic on black ethnic cleansing has been going on for years in Southern California.
Well, I wouldn’t call it “ethnic cleansing.” One of the problems that immigrant groups have is that they often end up living in black neighborhoods, and of course they immediately become targets because the immigrants are upwardly mobile whereas the local populace is not. I think a lot of the gang activity you see among certain California ethnic groups (Vietnamese and other Asians, Filipinos, some Hispanics, etc.) is because it was initially their way of banding together and defending themselves against the hostility of the black population in the neighborhoods in which they lived.
I remember once meeting a Vietnamese kid (very tough, but he’d survived long enough to go to college) who I thought was black when I talked to him on the phone...because his family had been settled in a ghetto by the refugee services agency that helped them find housing, and that lifestyle was his model of life - and speech. Fortunately, he was able to overcome it in his life, although it was definitely a little surprising when he opened his mouth and sounded like he was from Bed-Stuy or Watts!