As police have highlighted, some protesters are resorting to increasingly violent tactics.

Leaders of the student movement warned that they would continue to organize and demand the overthrow of the government despite security officers' violent tactics.

After an initial peace offer, employers refused to talk to the union, and the union leadership adopted violent tactics as a direct response.

She did not hesitate to use violent tactics to promote her agenda.

The competition was also marred by overly defensive and often violent tactics.