No news network nowadays is "perfect". A reporter will interview someone because s/he has an agenda. Her/His questions will be tailored to make a point. The network will present things with a certain spin. It's probably always been like this, but only recently have we noticed.
The only way to get unbiased information is to review multiple sources. If you think that Fox has a right-leaning slant on a story, look at that same story on MSNBC. Or, something like that.