Almost every aspect, not the people, the policy of zionism. For their to be peace, zionism has to be gone, it can not happen ever and will lead to our destruction before it ever leads to peace . It's a mistake that could very well get us all dead. I could go dozens of directions with this question. I could write a post so long not a single person would read it. Not all jews are zionist, you should spend some time trying to understand why so many from the time of it's conception until now are not zionist... These people are not traitor to their heritage Be carefule, there are answers that you'll find disturbing, answers that'll rip you right from your compfort zone of understanding...
a little history on the anti-zionist jewish movement: http://www.jewsagainstzionism.com/
Zionism and the state of Israel have already happened.
Since Israel already exists the only way to remove Zionism is the destruction of Israel and the elimination of millions of Jews. That would turn out to be another holocaust and no Jew would allow this.
The only way to solve the impasse is to work towards as 2 state solution like the UN and the group of 5 have suggested. Many Muslim nations support this, Turkey, Jordan, Egypt and even Saudi Arabia.
If hard liners in Saudi Arabia can agree with a two state solution, why can't Syria, Lebanon, Hamas and their backer Iran support the two state solution.
Once Hamas recognizes Israel and moves towards a 2 state solution then the whole world would be better off.
You have to move away from your hate and work towards solutions.