Through the late 1970s and into the 1980s the student groups began to clash violently with each other and the government.

Police were called to a scene that quickly turned nasty when youths clashed violently.

There may be a fight between them, with their antlers clashing violently.

They clashed violently with riot police for four hours injuring a photographer before the ships were free to leave.

At least five cars were overturned, and protesters clashed violently with police.