The BBC emerged from the Second World War as the critical adjunct to the religious culture of Britain, and this the churches sought to defend with ferocity through the power of the Central Religious Advisory Committee (CRAC). This formed a close alliance with the employees of the Religious Broadcasting Department. Down to the mid-1960s, CRAC effectively forced the management of the BBC to allow broadcasters to perform evangelising functions, and to keep Humanists and atheists from using the mic to disseminate their life stances or to attack religion. A group of influential religious employees, including the senior administrator Harman Grisewood, imposed a discrete but firm anti-secular policy upon the corporation until the 1960s. This became firmer, not weaker, as the period progressed, so that the few broadcasts on atheism were concentrated in the late 1940s rather than the 1960s.