Human Rights Watch alleges that Israel's use of lethal force against Palestinian demonstrators in the Gaza Strip in recent weeks may constitute war crimes.
The statement was issued Wednesday ahead of an emergency U.N. General Assembly meeting to vote on a resolution condemning Israel's use of force.
"The United Nations General Assembly should support a resolution that calls for exploring measures to guarantee the protection of Palestinians in Gaza, and a U.N. inquiry mandated to investigate all violations and abuses should identify Israeli officials responsible for issuing unlawful open-fire orders," the statement said.
Israeli forces have killed more than 100 protesters in Gaza and wounded thousands with live ammunition in recent weeks.
"The international community needs to rip up the old playbook, where Israel conducts investigations that mainly whitewash the conduct of its troops and the U.S. blocks international accountability with its Security Council veto, and instead impose real costs for such blatant disregard for Palestinian lives," Middle East director at HRW Sarah Leah Whitson said.
Palestinians have held near-weekly protests since March 30, calling for a "right of return" to ancestral homes now in Israel. At least 120 Palestinians have been killed and over 3,800 wounded by Israeli fire in protests along the border.
The Israeli military has said its soldiers adhere to the rules of engagement to defend Israeli civilians and security infrastructure from attacks cloaked by the protests.
The organization calls on the international community to "impose real costs for such blatant disregard for Palestinian lives."