In the US professional media participants are literally trained not to touch sensitive parts of the social discourse. Hence the political correctness - the modern doublespeak, and natural avoidance of entire massive sets of facts underlying important social problems and drivers. E.g. no reports in the U.S. media on French toxic waste dumping to the sea within Somalian territorial waters. But! A hell lot of publications about 'somalian pirates' afterwards. When these poor fishermen were literally left without source of food not only for them, but for their next generations.

Just in case I am too thin, the US journalist will rarely if ever publish fact that will cost him a career prospect, or give him label of 'red'. Even if he or she has certain sympathies. This is self-censorship and it is very effective.