The behavior isn't new, just the reach and visibility.
Conformist social pressure has always been intense. Previously, it was just very local and not visible outside the social context in which it happened. People didn't notice it (or if they did, would tend to approve of it) unless it was focused on them.
Conformist social pressure has always been intense. Previously, it was just very local and not visible outside the social context in which it happened. People didn't notice it (or if they did, would tend to approve of it) unless it was focused on them.