TEL AVIV, Israel—Israeli women and children have in recent weeks begun speaking publicly about what they experienced during nearly two months in Hamas captivity late last year. In primetime Hebrew TV interviews, the released hostages have confirmed that ordinary Gazans were deeply complicit in every stage of the hostage scheme. Unarmed teens helped to abduct Jews from their homes on Oct. 7, while Gazan women and children held some of the Israelis captive. In other cases, Gazan doctors collaborated with Hamas terrorists to covertly treat kidnapped Israelis and imprison them in hospitals. When the Israelis encountered Gazans on the streets,...