The movement in Beijing culminated during the "Red August" of 1966, which later spread to other areas in mainland China.[3][4] Mao made use of the group as propaganda and to accomplish goals such as seizing power and destroying symbols of China's pre-communist past ("Four Olds"), including ancient artifacts and gravesites of notable Chinese figures. Moreover, the government was very permissive of the Red Guards, and even allowed the Red Guards to inflict bodily harm on people viewed as dissidents. The movement quickly grew out of control, frequently coming into conflict with authority and threatening public security until the government made efforts to rein the youths in, with even Mao himself finding the leftist students to have become too radical.[5] The Red Guard groups also suffered from in-fighting as factions developed among them.