Genocide
I really don't know enough about the Israel -Palestine issue to have a proper opinion, but it seems like the term "genocide" is being thrown about a lot.
While most people think of the Holocaust or the Armenians when "genocide" is mentioned, these are extreme examples of a practice, though of course it is despicable on any scale.
From Wikipedia but referenced to original sources:
While precise definition varies among genocide scholars, a legal definition is found in the 1948 United Nations Convention on the Prevention and Punishment of the Crime of Genocide (CPPCG). Article 2, of this convention defines genocide as "any of the following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such: killing members of the group; causing serious bodily or mental harm to members of the group; deliberately inflicting on the group conditions of life, calculated to bring about its physical destruction in whole or in part; imposing measures intended to prevent births within the group; [and] forcibly transferring children of the group to another group."