The truth is that most politicians are corrupt on some level, most politicians are unduly influenced by lobbyists, few politicians truly care about their constituents, mass media doesn’t care about the truth, even though some of their employees might, they just care about revenue, for any political perspective you can think of, you’ll find a media outlet willing to pander to it.
I don’t think any of that is particularly controversial (or even insightful for that matter). I’d wager that most people would agree with that sentiment on some level. But they’ll tend to lose sight of reason when you suggest that “yes, that includes the politicians you like, and the media outlets that share your opinions”.
Any public figure of any significance is going to attract a tribe of impassioned haters. They tend to have no greater connection with the truth than that same persons tribe of fervent fans will.