Young Democratic stars like Tulsi Gabbard, Alexandria Ocasio-Cortez and Ilhan Omar have broken America’s biggest taboo - calling out Israel for its oppression of Palestinians - according to Eric S. Margolis, an American journalist and writer.

“Saying anything negative about Israel has long been the third rail of US politics and media. Israel is our nation’s most sacred cow. Any questioning of its behavior brings furious charges of anti-Semitism and professional oblivion,” Margolis wrote.

He added that a number of US senators and congressmen “lost their positions after rebuking Israel for its mistreatment of Palestinians or daring to suggest that Israel had far too much influence in the US.”

The analyst pointed out that “journalists were not even allowed to write there was an ‘Israel lobby.’”

“Now, young Democratic stars Tulsi Gabbard, Kamala Harris, Alexandria Ocasio-Cortez and a feisty congresswoman from Minnesota, Ilhan Omar, have suddenly broken the taboo and said what dared not be said: there is too much rightwing Israeli influence and there must be justice for Palestine,” he wrote.

“Presidential candidates Bernie Sanders and Elizabeth Warren have come to the defense of Ilhan Omar against the usual charges that she is anti-Semitic. So have black groups and smaller liberal Jewish groups,” he noted.

“The Democratic Party, that once received half its financial support from Jewish sources, is badly split over the Palestine crisis,” he revealed.

Omar, a newly elected Democrat Congresswoman from Minnesota, has sparked a firestorm on Capitol Hill over repeated criticisms of Israel and the powerful pro-Israel lobby in Washington that exerts great influence in US politics.

The US House of Representatives on Thursday passed a resolution condemning bigotry and hate after backlash from a number of factions across the Democratic Party forced changes to a bill that originally focused on anti-Semitism and remarks about Israel by Omar, whose legitimate criticism of Israel has been deemed anti-Semitic by some colleagues and exposed deep fault lines among Democrats.

House of Representative Speaker Nancy Pelosi unveiled the resolution, which she called the "strongest possible opposition" to anti-Semitism, Islamophobia, and white supremacist bigotry.

Omar joined the two other Muslims in Congress, Rashida Tlaib and Andre Carson, in praising the measure's passage.

"It's the first time we have voted on a resolution condemning Anti-Muslim bigotry in our nation's history," they said, noting the worrying rise of extremism in America.

The resolution was initially pushed by Zionist organizations and some Jewish members of Congress to rebuke Omar for condemning the Israel lobby, but there was a heated backlash from fellow Democrats who said she was being unfairly singled out by the leadership.

Some Democratic senators in the upper chamber of Congress, including three 2020 presidential candidates Sanders, Warren and Harris, expressed frustration that Omar faced an implicit rebuke, while racist statements by President Donald Trump and other Republicans go largely unchallenged.