...the U.S. media is controlled by the liberal ideas of big business.
Although I agree that big
business--in this case, conglomerates--control the major media outlets, the concept
of "liberal" is worth taking a moment to examine.
Most big business tycoons, as well as the men and women who
sit on their board of directors are pretty conservative in their personal
thinking—in some cases ultra-conservative.
While these people obviously call the shots in terms of major
decisions, it's interesting that their conservative ideas don't seem to end up in
program content, or don't seem to be reflected in network and station programming
decisions.
The reason, which is based on maximizing profits, is discussed in some
detail here.
The possible exception to this is in news, where people seem
to show a preference for "news they agree with." This is also discussed in this
article.