But they don’t have the platform to preach. the message from sanders and Corbyn and the choir they are preaching to are the majority of the people. working people. But the system has them hypnotised. It sounds like a conspiracy theory but it’s plain to see just turn the tv on. It’s out in the open.
People all over think certain organisations are more biased against their own view points. Probably means they're not actually biased at all.
In terms of the BBC, for example, it'll depend on who is running/anchoring the show. CNN and Fox are obviously extreme examples in America but they're clear in their bias.
In terms of Corbyn, he oversaw the worst Labour defeat in years and a lot of people didn't like him. That's not the media's fault.