If the media couldn't lie, they'd be out of business. Anyway, they don't have to outright lie, the people who work in the media are mostly journalists which means they are wordsmiths, which means they can slant things in subtle ways that fools most people into believing things and thinking the way the journalist wants them to. Such as: whenever the word Republican appears in a newspaper it is often preceeded with the word "radical", or rightwing. If a Democrat screws up and makes the news, his/her party affiliation is often left out. Techniques such as this are ubiquitous throughout the media.
Question everything you, see, hear, or read.