It is not a blockade. Israel does not owe Gaza (not Palestine - Palestine includes the West Bank and Golan Heights) Gaza anything. Gaza has had billions paid to it by the international community. They could have built their own electricity, grown their own food, and got the water from the aquafers beneath them (which Israel does not have). They chose to use the money to spend on weapons and tunnels.

Also, if you check with Wiki, the influx of people into Gaza is the result of wars in other Middle Eastern countries. There were nowhere near 2 million people there when this started. Please get your facts straight.

The reason for the 'wall' is to protect Israel from the suicide bombes.