 Some demonstrations and protests can turn, at least partially, into riots or mob violence against objects such as automobiles and businesses, bystanders and the police.Police and military authorities often use non-lethal force or less-lethal weapons, such as tasers, rubber bullets, pepper spray, and tear gas against demonstrators in these situations.Sometimes violent situations are caused by the preemptive or offensive use of these weapons which can provoke, destabilize, or escalate a conflict.