"The way Sanders humanized the Palestinians is, frankly, remarkable for a major presidential candidate," Sarah Yerkes, a visiting fellow at the Brookings Institution, told ABC News.
"That does not make me anti-Israel. That paves the way, I think, to an approach that works in the Middle East," he said.
"I think Secretary Clinton had it right when she noted that Palestinian leadership has repeatedly rejected U.S.-brokered compromises that could have already created a two-state solution," Jonathan Greenblatt told ABC News.
The ADL, a non-profit Jewish advocacy group, supports a two-state solution.
The Tuesday night comments were also not the first time Sanders has drawn criticism from the ADL. They called for, and later received, a clarification from Sanders about the number of Palestinian deaths there were in the Gaza War.
Greenblatt spoke to him during the incident, which happened last week.
"In the narrow sense, he corrected his misstatement but in the broader sense, he continues to mischaracterize the conflict and misattribute the solution," Greenblatt told ABC.
Yerkes noted that Sanders' criticisms weren't left solely for the Israelis.
She said he was "really just hammering this point that the United States needs to take a more balanced approach both to Israeli security and to prevent further Palestinian suffering."
"He's not only putting the blame on Israel, which he clearly did, but also noting that there is a U.S. role here," Yerkes told ABC News.
For his supporters, like Linda Sarsour, the comments were "very admirable" and show a "balanced" view.
"What Sen. Sanders remarks demonstrated is how right, [as in] conservative right, we are as a nation that we found it so radical and revolutionary that a man can say that the Palestinian people deserve to be treated with dignity and respect," Sarsour, the co-founder of the Muslim Democratic Club of New York, said.
Sarsour has been campaigning with Sanders and was in the spin room on his behalf after the debate Thursday. She said she thinks she may have been "the first Muslim woman in a hijab in a spin room on behalf of a presidential campaign."
For ABC News political analyst Matt Dowd, it was the location -- the debate stage in Brooklyn -- and timing -- just days before the New York primary -- that struck him.
"It was a pretty brave move on his part," Dowd said.
"I don't think it's necessarily helpful in the primary but it does show that he's willing to take a stand even if it hurts him politically," Dowd said, noting the considerable number of Jewish voters in New York City.