The masked and armed security contractor atop a dirt mound watches thousands of Palestinians who have been kettled into narrow lanes separated by fences below.He makes a heart shape with his hands and the crowd responds - the fence begins to bend as they push against it.

After reports of violence outside aid sites in Gaza, the Wall Street Journal analyzed satellite imagery, video and witness testimony, and found that the U.S.-led, Israel-backed process has led to chaos and deaths.