Pat-Riot...
Actually, its not even the "Arab Culture" as a whole.
Its the whole "clan" oriented system, and here, in particular, its the "Palestinian" death-cult culture. I know honor killings have occurred in Jordon, Pakistan, etc., but I just find the fact that actual Palestinian law gives a "mitigation factor" to honor killings to be repugnant.
Edited to add: Pat, please read the article. It draws a pretty direct link between the increasing role of "extremism" and the fact that people are taking bits and pieces of the Koran as justification for this nonsense, despite pronouncements by the Imans to the contrary.
Like it or not, that is a flaw with Islam: Its most holy writings purport to be the "verbatim" word of the diety, and are easily (mis)construed as justification for bad stuff.