History however does not justify the same acts in the present.
Too bad people do not get this. And as long as they don't get it, there will be no end of fighting. Because there are always more groups that got kicked then are the ones kicking at the moment.
It is the same with Israel. Somewhen in history Jews kicked someone out of the area. Then they got kicked out and so on. Then the palestinians where there and got kicked out by the jews coming from all over the world to create Israel state.
But that some dead Isreaelis where kicked out there 2 millenia ago does not make it good that the palestinians were kicked out or put into ghettos. At the same time, today, it is not right to kick out the Israelis that were born there.
As long as Israel does not stop building more settlements, there will be no peace. And even then I doubt the sides will get together. Too much blood.
There can be peace, in the British Isles we have seen it in Northern Ireland. It requires that people from all sides participate equally on a political solution, while anyone is disadvantaged it can never work.