The hate comes from anitsemitism. The Hamas Charter calls for the extermination of every israeli jew, and new plans include the enslavement of any of the rest that can be exploited by force.

Hamas Charter: A Covenant for Israel's Destruction

Hamas: Covenant of the Islamic Resistance Movement (August 18, 1988)

Hamas-Sponsored 'Promise Of The Hereafter' Conference For The Phase Following The Liberation Of Palestine And Israel's 'Disappearance': We Must Differentiate Between Jews Who Should And Should Not Be Killed, And Prevent A Jewish 'Brain Drain' From Palestine