(CNN) Democratic presidential candidates Sens. Bernie Sanders, Kamala Harris and Elizabeth Warren on Wednesday defended Rep. Ilhan Omar against the backlash to her comments slamming pro-Israel groups and politicians, which have been called anti-Semitic.

Sanders, who is Jewish, said criticism of Omar and efforts to get her taken off the House Foreign Affairs Committee, primarily from House Republicans, are aimed at stopping a discussion about American's foreign policy toward Israel.

"What I fear is going on in the House now is an effort to target Congresswoman Omar as a way of stifling that debate," the Vermont independent said in a statement. "That's wrong."

In her own statement, Harris called out all instances of bigotry and expressed concern that the focus on Omar "may put her at risk."

"We all have a responsibility to speak out against anti-Semitism, Islamophobia, homophobia, transphobia, racism, and all forms of hatred and bigotry, especially as we see a spike in hate crimes in America," the California Democrat said.

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