I'm always a little surprised at how brain washed people are concerning Israel. Even when the truth is staring them in the face lots of people just don't see it.
Your analogy of Oklahoma being invaded by Texas is a little off. In terms of numbers the 1948 theft of Palestine is more like Oklahoma being invaded by the people of Albuquerque backed by the population of New York, and then putting all those who couldn't escape into a prison camp.
That's funny right there!