The Black conscious movement (BCM) attacked what they saw as traditional white values, especially the "condescending" values of white people of liberal opinion. They refused to engage white liberal opinion on the pros and cons of black consciousness, and emphasised the rejection of white monopoly on truth as a central tenet of their movement.[3] While this philosophy at first generated disagreement amongst black anti-Apartheid activists within South Africa, it was soon adopted by most as a positive development. As a result, there emerged a greater cohesiveness and solidarity amongst black groups in general, which in turn brought black consciousness to the forefront of the anti-Apartheid struggle within South Africa.
The BCM's policy of perpetually challenging the dialectic of Apartheid South Africa as a means of transforming Black thought into rejecting prevailing opinion or mythology to attain a larger comprehension brought it into direct conflict with the full force of the security apparatus of the Apartheid regime. Hope this helps! :)