According to this report, (here), a peaceful protest was infiltrated by agitators. I can believe this, since I saw the state police do this on Oct. 10 at another peaceful protest. A good number of Romans would have participated in a violent protest, because the level of anger at the new lockdown which was declared on Oct. 24th is at the boiling point.
But by infiltrating peaceful protests, the State Police create a situation of violence whereby they can then, the next day, arrest the organizers of the peaceful protest and thus repress all political dissent.