More to the point, we currently share a society with many people of a violent culture, which makes directly shaming them dangerous and unwise. This was not always the case. The death of shaming is largely related to the increased daily proximity to violent subcultures who do not fear consequences.

Those subcultures have their own notions of shame and honor, and have lines they are careful about crossing and willingness to turn to violence if their honor is overly injured.

Disapproving glances on the subway when their music is too loud does not rise to that level, however.