It is an occupation, there is no other word to describe it, and there is no point in searching for another word for it. There are always reasons for "occupations", and it is important for people on both sides to try to understand what the reasons of the occupiers are, and what the reality of the occupied is like.
The people of both the nations that share the Holy Land have an enormous amount in common, starting with what is essentially a shared religion - and they have both been victims of the same historical injustice that has set them at each others throats.
The primary blame for the injustice that has happened to the Palestinians lies in the same place where the injustice against the Jews happened, which triggered this injustice - back in Europe.
It's not possible to wind back history and right the wrongs that have been done. But recognising that wrongs have been done, and learning to understand why they have been done is a necessary stage in moving forward towards peace and some kind of justice.
As you say Mark, there are people who are trying to build that kind of common understanding, and they are going to have a very hard time of it - non-violent struggle can be every bit as painful and costly as violent struggle. I'm glad Pete's given them that song to share.