In 1952 he was chosen as the National Volunteer-in-Chief of the Defiance Campaign with Maulvi Cachalia as his deputy. This campaign of civil disobedience against six unjust laws was a joint programme between the ANC and the South African Indian Congress. He and 19 others were charged under the Suppression of Communism Act for their part in the campaign and sentenced to nine months of hard labour, suspended for two years.
A two-year diploma in law on top of his BA allowed Mandela to practise law, and in August 1952 he and Oliver Tambo established South Africa’s first black law firm, Mandela & Tambo.
At the end of 1952 he was banned for the first time. As a restricted person he was only permitted to watch in secret as the Freedom Charter was adopted in Kliptown on 26 June 1955.