I used to support Israel until I found out about just how much the Israelis were preventing from being brought into the Gaza Strip:
Israel allows limited humanitarian supplies from aid organizations into the Gaza Strip, but not dual-use items, which can also be used for military purposes. According to the Coordinator of Government Activities in the Territories of the Israel Defense Forces, in May 2010, this included over 1.5 million litres of diesel fuel and gasoline, fruits and vegetables, wheat, sugar, meat, chicken and fish products, dairy products, animal feed, hygiene products, clothing and shoes.
According to Gisha, items that have at various times been denied importation into Gaza in 2010 include ordinary consumer goods such as jam, candles, books, musical instruments, shampoo, A4 paper, and livestock such as chicken, donkeys, and cows.
According to the UN Office for the Coordination of Humanitarian Affairs at various times, Israel has blocked goods including wheelchairs, dry food items, and crayons, Stationery, soccer balls, and musical instruments. International aid group Mercy Corps said it was blocked from sending 90 tons of macaroni and other foodstuffs. After international pressure, Israeli authorities said that they were giving the shipment a green light. Israel was also reported to have prevented aid groups from sending in other items, such as paper, crayons, tomato paste and lentils. Because of an Israeli ban on the importation of construction materials such as cement and steel, which could be used to build bunkers for military use by Hamas, the UN Relief and Works Agency started to build mud brick homes.
I seem to remember that there were many times that other nations (and one in particular) treated Jews the same way.