The revolution was televised: why didn’t the radical TV of the 1980s last?
In the 1980s, Margaret Thatcher helped (unintentionally on her part) to give a platform to radical ideas and unheard voices through the introduction of Channel 4. Or so argues this piece in The Guardian providing an overview of some of the offerings.
https://amp.theguardian.com/tv-and-radio/2018/sep/12/television-will-be-revolutionised-channel-4