This story is available exclusively to Business Insider subscribers. "It's a mix of grief and anger," Niv Keidar, who helped to block a major intercity highway in Tel Aviv on Sunday night, told Business Insider. AdvertisementSunday night saw the largest protests in Israel since the Hamas terror attacks, with many Israelis expressing anger at Prime Minister Benjamin Netanyahu's government for failing to secure a hostage-ceasefire deal. AdvertisementA group representing the hostages' families criticized Netanyahu's government, claiming the hostages could still be alive if a deal had been reached. He told Business Insider he feels angry and concerned.

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