Editorial bias is one thing, blatantly burying a major news story(WikiLeaks) because it doesn't fit the agenda is equal to being "fake news site". Oh sure, they ran a one or two minute piece once, but TRUMP IS A RACIST runs for 38 minutes every night.
There is bias (accidental unintentional) and then there is rigged reporting. Calling it bias is
Accurate reporting on the sayings and doings of deplorable people tend to make them seem deplorable. It's not the fault of news outlets, mainstream or otherwise, that the right chose to rally behind a racist demagogue.