People like to act like this has never happened before, but the fact is it happens all the time throughout history. We like to think we are evolved past that, but we are not and unlikely to ever be at this point. The true nature of man is destructive, selfish, xenophobic and cruel.
After Israel is done with Gaza, we'll create some holiday that has children dressing up as Palestinians for first grade theater. Palestinians will become like Native Americans: scarce and marginalized. Because of the religious, ethnic and racial homogeneity of the Israeli people, its likely to be far worse than what settlers did to the Native population at the time.
Most people just don't care. If more did, it wouldn't be happening in the first place. Or at least those who are in power don't care and see human life as disposable.