How can people call Israel racist when the Arabs arent even comparable?

Regarding the Palestinian "right of return," most people are unaware that when Israel became a state, Arab countries responded by expelling hundreds of thousands of Jews, depriving them of property without compensation. These Jewish refugees will never have the right of return to their former homes. Moreover, Israel paid exorbitant prices for uninhabited arid and semi-arid land, often ten times the going price of prime farmland in Iowa, taking great pains to avoid displacing Palestinians. Regardless, the Arabs criticize Israel but make no mention to criticize their own nations for not sending aid to Gaza. Even Egypt has blockaded Gaza, but the Israelis get all the blame. Arab governments have killed more Palestinians then Israel has ever killed. If Iran for example cares so much about the Palestinians, why are they not declaring war on Israel, why are none of these nations declaring war if they feel so connected to the Palestinians, they have fought with Israel before. Why is the only thing coming out of the Arabs' is anti-semitic hatred and more guns for Hamas? In my opinion, most Arabs\ nations hate Hamas and are just trying to get rid of them while making Israel look like the bad guy via collateral damage.