>>509857372 (OP)It's based but not based.
It means Japanese people are no longer looking out for each other. If you did this in Thailand, for instance, without knowing what had actually happened, any male Thai passer by of reasonable age would jump in to help his country man. They would end up fighting about up to a dozen or more Thais.
There is no social/ethnic cohesion in this part of Tokyo. When this starts to happen the country gives up.