Do we have media bias? Of course we do! We're human beings with emotions and opinions that will influence our work without us even noticing. Some news providers are simply better than others at keeping a balanced view of things.
However, if you truly want the most clear-headed, unbiased perspective of events, you need to take a step back. I suggest stepping back all the way to the UK. The BBC and other British news outlets give us the closest thing to a level-headed take on U.S. and global events as we can ask for of emotional human beings. The British are our friends and allies, but they are far enough removed from us to "keep things real."
I've also noticed that news in Britain is less of an entertainment farce as it is here in the U.S. Here's a fantastic example:
As he states, and as is clear in the footage shown, coverage of Ebola in British media is "calm, measured.... In America, not so much." It's hilarious, until you realize how many Americans are actually buying into the panic our news sources are trying to generate.
So, if you ever find yourself unsure of your stance on a particular topic/event, political or otherwise, turn off your local news and tune in to something from abroad. If you really are dedicated to getting all sides of the story, watch news from various nations to help you form a very well-rounded view of the situation.
*Also, just a quick addition on the subject of media bias on a more local level: Our own in-state situation of the clearly-biased, church-owned Deseret News attempting to take over the Salt Lake Tribune is a personal concern of mine. If you're not a member of the Church That Need Not Be Named in this state, this monopolization of all Utah media is essentially a gag order. (Disclaimer: this last bit was brought to you by my own humble opinion. You need pay no regard to it if it offends you.)