(Vigilante attacks) can be violent.Logical formLearned from9 sentences. A series of violent crimes may be blamed on immigrants.Logical formLearned from9 sentences. A (police force) can be violent.Logical formLearned from9 sentences. Concern can be about violent crime.Logical formLearned from9 sentences. An (anti-government protest) can be violent.Logical formLearned from9 sentences. (Student clashes) can be violent.Logical formLearned from9 sentences. A (drug user) can be violent.Logical formLearned from9 sentences. A (protest movement) can be violent.Logical formLearned from9 sentences. Ambushes can be violent.Logical formLearned from9 sentences. A (guerrilla campaign) can be violent.Logical formLearned from9 sentences. A (prison riot) can be violent.Logical formLearned from9 sentences. An assault can be violent.Logical formLearned from9 sentences. Soldiers can be violent.Logical formLearned from9 sentences. Religious riots can be violent.Logical formLearned from9 sentences. An (opposition campaign) can be violent.Logical formLearned from9 sentences.