Complex sentence: Somerby criticizes what he considers the media's frequently biased or lazy coverage and especially the tendency to latch on to a generally agreed "script" with little regard for the actual facts that frequently contradict the script.
Split into simpler sentences: Somerby criticizes what he considers the media's frequently biased or lazy coverage. In his view, the media frequently latch on to a generally agreed "script" with little regard for facts that contradict the script.