I think the point was - if the BBC (closely tied with the political establishment) cared so much about children's safety they would have acted against Saville before they were compelled.
I think they're trying to say that "hate speech" was invented by a hypocritical government to control people and it's not a real concern for regular folks, but that's obviously not true; it was born out of civil rights campaigns in the '50s and (eventually) adopted by governments due to popular demand.