It would be nice if the world was so easily divided into black and white, but it isn't. Politics is complicated, and the actions of the Israeli government are not the actions or even the will of the Israeli people. Israel deserves to exist, and so does Palestine. Acknowledging the rights of both people doesn't negate condemnation of what either government has done in violation of human rights.
Trying to walk that middle line between their right to exist and disavowing their actions is harder than you think. You think it ought to be easy, except for the people who think differently from you and insist that the opposite solution you want is the only acceptable path.
We don't have the privilege of knowing everything about the situation. Trying to drive from the back seat isn't helpful.