Around here it was the Vietnamese in 1970s and 1980s. 99% were refuges recruited to work in poultry plants plus a percentage opened businesses to cater to Vietnamese population. They were super violent and not uncommon for them to go off with guns over anything. Have seen guns pulled outside of bars or other places but only been witness to someone actually shooting one time.
Back when Friday/Saturday night "cruising" was huge had loop where everyone went around the mall but security guards routed cruisers out after one turn then would go up divided four lane, take turn around Burger King and back to the mall. Basically every person sixteen to early twenties was in the loop including Vietnamese kids. Parking lot of Burger King blew up with at least two AR 15s and one or two AKs all select fire swapping rounds. I was in turn lane to enter the parking lot. Pulled back out into four lane and left town for the night.
We had huge Vietnamese population that kept the poultry industry running but turned out living in war zone for generations had low regard for life and extreme violence became regular thing. The poultry association began renting billboards in Mexico offering jobs to Hispanics to come the the "Chicken City", took about five years for the Vietnamese part of town to become "Little Mexico" and the Vietnamese mostly left. Crime went up but was petty theives and drugs instead of regular shootings so locals seemed more content. Even I put three Hispanics on my crew to do the basic manual labor. Those first ones were willing to work, had one stay 13 years, another eleven and other nine but all saved enough money and have their own businesses now with half dozen or more kids as labor force.
