Internment
On 21 March 1960, the PAC led a nationwide protest against the hated Pass Law which require black people to carry a pass book at all times. Sobukwe led a march to the local police station at Orlando, Soweto in order to openly defy the laws. He was joined on route by a few followers and, after presenting his pass to a police officer, he purposely made himself guilty under the terms of the Pass Law for being present in a region/area other than that allowed in his papers. In a similar protest the same day in Sharpeville, police opened fire on a crowd of PAC supporters, killing 69 in the Sharpeville Massacre.
Following Sobukwe's arrest, he was charged and convicted of incitement, and sentenced to three years in prison. After serving his sentence, he was interned on Robben Island. The new General Law Amendment Act was passed, allowing his imprisonment to be renewed annually at the discretion of the Minister of Justice. This procedure became known as the "Sobukwe clause" and went on for a further three years. Sobukwe was the only person imprisoned under this clause.
Read more about this topic: Robert Sobukwe