Hamas is regularly described as 'Iranian-backed Hamas, which is dedicated to the destruction of Israel.' One will be hard put to find something like 'democratically elected Hamas, which has long been calling for a two-state settlement in accord with the international consensus'--blocked for over 30 years by the US and Israel. All true, but not a useful contribution to the Party Line, hence dispensable.
The new crimes that the US and Israel were committing in Gaza as 2009 opened do not fit easily into any standard category--except for the category of familiarity.