The SDS was founded in 1946 as the student wing of the SPD. However, after the SPD's policies became more conservative in 1959, the SDS became more radical. They also became more wide ranging in their campaigns, railing against things like the Vietnam War, nuclear weapons in the FRG and former Nazis holding positions of power. From 1966, the SDS became a vocal opposition group to the Grand Coalition. They adopted tactics such as student sit-ins at universities and mass demonstrations. By the late 1960s, it had control of the national student body, the VDS.