Comment by vdqtp3

> prevent space sharing between the ~2-3 social groups where intermingling means friction and fear.

The issue is not space sharing between social groups. I'm happy to share space with people of any ethnicity, skin color, sexual orientation, political leanings, dress code, economic status, educational level or "social cohorts". The issue is civil, polite people being forced to share space with rude, entitled, violent individuals.