History is rife with examples of groups and/or whole societies that have been marginalized or regulated to the sidelines who feel that their only option is to rebel or fight back, sometimes in ways that we question as having any semblance of value, let alone common sense.
Oftentimes, years of struggle that yield little or no results lead to desperate and extreme actions. When the struggle seems to become an exercise in futility, the actions become more frequent and any injuries suffered become a justification for more extreme actions in the future.
If there is no resolution to the issue, the situation can devolve to become volatile enough to cause others to join in and utter chaos can ensue.
I believe that is pretty much the situation that has come about between the Palestinians and the rest of the world, especially Israel.
To us, their actions make absolutely no sense. To them, it is a matter akin to our Revolution.