The Gaza strip, essentially a modern-day "Warsaw ghetto", is packed with Palestinians who were evicted from their homes and villages in the West Bank, and is one of the most densely populated areas on earth [source].
It's bad enough already, but Israel is currently in the process of shrinking Gaza by 44 percent. The map below shows the area Israel is seizing (a three-kilometer "buffer zone") which, according to the United Nations Office for the Coordination of Humanitarian Affairs, contains about 44 percent of Gaza’s territory.
The death toll in Gaza is now more than 1,400, 8,200 people had been wounded. Up to 80% of the Palestinian casualties were civilians. That means that 1,100 Palestinian civilians have been killed as opposed to three civilians in Israel. There is no moral equivalency.
And while the White House condemns the deliberate targeting of refugees in UN schools (which is just empty rhetoric), Senate Majority Leader Harry Reid, yes, a Democrat, is preparing to introduce a new "emergency" funding bill help finance more of the slaughter. [source]