If, for 70 years, you beat, imprison, shoot, kill, humiliate and evict a people then what sort of social and political movements do you think will arise?
People like AndyC aren't bright enough to think this through and are highly susceptible to accounts that align with their own racist views. This is why people like Andy think there is something intrinsically malevolent about Palestinians, that they would be resorting to terrorism no matter what circumstances they faced.
Organisations like Hamas, and indeed the Taliban, are products of their environment.
The Palestinian environment is not of their own making or choice. The Israelis created it.