So it's a bit of a cop out to pretend that civilians in Gaza can't be blamed for Hamas - they can, they voted for them, and they supported the ousting of the far more moderate and reasonable Fatah, those who supported Fatah were killed or fled to the West Bank.
Hamas won the election with only 44.45% of the popular vote, with about 25% of the eligible population abstaining (Palestinian legislative election, 2006). You're blaming all Palestinians for a choice made by less than half of the voters, which is hardly fair. Those who voted against Hamas aren't to blame for the actions of Hamas just because they were unfortunate enough to be on the losing side of the election. On top of that, the way Hamas has dealt with Fatah supporters means that even some of the 44.45% who voted for Hamas could reasonably be considered to be under duress.