2 July 1982
The Internal Security Act gave massive powers to the authorities to investigate any organization or publication. This prompted opposition parties to oppose this provision of the Internal Security Act. Sections 19(1) and 20 dealt with the banning of people, including confinement to a particular district, prohibition from attending any kind of meeting and prevention from being quoted. It also provided for house arrest.
References

O’Malley, P. ‘1982’, from Nelson Mandela Centre of Memory, [online], available at www.nelsonmandela.org.za|

Schoeman, E. and Kalley, A. (1999) ‘Southern African Political History: A Chronology of Key Political Events’, (Greenwood Press) p. 499|

South African History Online, ‘The Internal Security Act becomes operative’, [online], available at www.sahistory.org.za (Accessed: 24 June 2013)|

Chronology of Apartheid Legislations from Stanford Education, Volume 1 Chapter 13