Prior to October 7, there were roughly two million Arab citizens of Israel but no Jewish citizens in Gaza. Gazans in 2006 voted in Hamas to rule them. It summarily executed its Palestinian Authority rivals. Hamas canceled all future scheduled elections. It established a dictatorship and diverted hundreds of billions of dollars in international aid to build a vast underground labyrinth of military installations. Hamas began the war by deliberately targeting civilians. It massacred them on October 7 when it invaded Israel during a time of peace and holidays. It sent more than 7,000 rockets into Israeli cities for the sole purpose of killing noncombatants. It has no vocabulary for the collateral damage of Israeli civilians, since it believes any Jewish death under any circumstances is cause for celebration.
Hamas places its terrorist centers beneath and inside hospitals, schools, and mosques. Why? Israel is assumed to have more reservations about collaterally hitting Gaza civilians than Hamas does exposing them as human shields.