and the media are highly receptive to her atasks after years of frustration in conservative and liberal media circles over bias, misinformation, the spread of hate and anger, the effects of instagram on teenage girls and years of zuckerberg apologieses and belated promises to do better. here s the thing. these aren t just her opinions. it s the tens of thousands of internal documents, proving that the facebook brass is fully aware of its increasingly toxic impact and hasn t done much about it that provides the story s power. and the challenge for pundits and politicians alike is to keep after perhaps the world s most powerful media company. i m howard kurtz and this is media buzz. howie: the story kicked into overdrive when the facebook whistleblower revealed her identity to cbs scott pelley. the version of facebook that s with us today is tearing society apart and causing ethnic violence around the world. howie: her testimony drew praise from republican and democratic s