Here's how we can distinguish between those genuinely dedicated to countering Jew-hatred from those caught up in partisan warfare.
Interior Minister Joachim Brudzinski denounced the revival of the abandoned tradition, echoing condemnation across Poland and the world.
"We're not gonna be fools anymore," Trump said.
Activist group IfNotNow is demanding that the organization better reflect the complexities of the Israeli-Palestinian conflict during its funded tours.
Some protesters carried anti-Semitic placards touting Holocaust denial conspiracy theories.
Alabama Representative Mo Brooks quoted Hitler's Mein Kampf in the House on Monday.
Netanyahu, who is facing the prospect of criminal charges for bribery, fraud and breach of trust, said the close relations between the U.S. and Israel exist because "we share the same values."
Ex-White House adviser says anti-bigotry resolution should have focused on Omar's comments.
"I think she has a different experience in the use of words," Pelosi said.
"I oppose discrimination against anyone based on inherent characteristics like ethnicity, race, sex or any other attribute over which a person has no control," Representative Mo Brooks said.
GOP members criticize "watered down" text that failed to mention congresswoman Ilhan Omar by name.
Omar is embroiled in allegations she used anti-Semitic tropes in her criticisms of the state of Israel and the pro-Israel lobby in the U.S.
The Vermont senator and presidential candidate fears the outcry surrounding the congresswoman will stifle debate over Israel and the Palestinian territories.
The float featured Orthodox Jewish puppets standing among bags of money and rats.
Rep. Omar's tweet was deeply regrettable and she was right to apologize. But the call for her resignation from a president who's party is dominated by white nationalists is clearly in bad faith.
The CNN chyrons below read: "Double standard? Trump's hypocrisy on anti-semitism as he calls for Rep Omar to resign."
"We're forgetting that Trump trades in the language of 'globalist.' That word comes out of a white supremacist, white nationalist community."
"I learned from people impacted by my words. When will you?" Omar tweeted.
The powerful lobby group sent out an email asking for support in the wake of controversy sparked by Omar's tweets.
Congress is refusing to fund the wall President Donald Trump would like to construct on the nation's southern border.
"Congresswoman Omar's use of anti-Semitic tropes and prejudicial accusations about Israel's supporters is deeply offensive," read a statement from Pelosi and Democratic leadership.
The American Jewish Committee has called on the Democratic congresswoman to apologize.
Congresswomen Ilhan Omar and Rashida Tlaib are the first Muslim women to serve in Congress.
"While I still firmly believe in its values and mission, I cannot associate with the national march's leaders and principles, which refuse to completely repudiate anti-Semitism and all forms of bigotry. I cannot walk shoulder to shoulder with leaders who lock arms with outspoken peddlers of hate."