20 March 1976
The Roman Catholic Church decided in principle to open its 192 all-white schools to black pupils. Legal questions relating to this were going to be discussed with the government. Three months later, more than 20 000 learners from Soweto marched against the use of Afrikaans as a medium of instruction in Black secondary schools. The uprising then escalated into a nation-wide revolt, revitalising the struggle for liberation in South Africa.
References

Nelson Mandela Foundation,"20 March 1976",From: Nelson Mandela Foundation,[Online],Available at: www.nelsonmandela.org,[Accessed on: 14 March 2014]|O’Malley, P. ‘1977’, From: Nelson Mandela Centre of Memory, [online], available, at www.nelsonmandela.org.za (Accessed: 14 February 2013)