Not all violence is physical or overt. People are often extremely violent without realising it.
Violence can take many forms.
Harsh, unkind words. Derisive laughter. Sarcasm. Mockery. Insults. Emotional hostility. Aggression.
Pushing, forcing, controlling, manipulating.

Many people use violence in a sneaky, underhand way. Through gossip, malignant words, innuendo.
Our culture is far from being non-violent.