Don't wear a Puerto Rican shirt in "America"

It may be a continuation of big city turf issues between rival ethnic groups.

Same issue broke out at Marine Corps Camp Pendleton in the 1970s when I was there. Puerto Rican flag license plates, shirts, caps, decals, etc caused fights all over the place.

It was mostly the guys from Philly and NYC, who brought their home turf wars with them.