When do protests become aggression? When do protests become riots? Is this good or bad?

Source: The Price of Liberty
by Nathan Barton

“When do people protest? Almost always, it is done when people organize it. Sometimes, there are ‘spontaneous protests.’ But usually some group, formal or ad hoc, sponsors and schedules and provides some sort of assistance. It is generally in response to some public event or activity: a proposed law, a publicized incident (such as police killing or injuring someone), or an attempt to delay or prevent something from happening. Protests can be calm — and peaceful. But they can also sometimes be raucous. Still, I believe we can draw a clear line between protest and riot.” (06/08/21)