The 2016 campaign season has led to the widespread anti-semitic harassment of journalists on social media, according to a report released this week, and GOP presidential nominee Donald Trump won’t say if he’ll concede should he lose the election.

Anti-Defamation League Report Finds “Widespread Anti-Semitic Harassment of Journalists on Twitter During 2016 Campaign”

A task force created by the Anti-Defamation League (ADL) released a report Wednesday outlining the wave of anti-Semitic harassment journalists have experienced throughout the 2016 election season.

About 2.6 million tweets were identified by the task force as containing a broad set of keywords and keyword phrases designed to capture anti-Semitic language. Those tweets had roughly ten million user impressions, meaning the language showed up that many times in a timeline or search profile.

This “may contribute to reinforcing and normalizing anti-Semitic language on a massive scale,” according to the report.

There was a “significant” increase in anti-Semitic tweets as campaign coverage intensified from January to July. Many of the tweets identified in the analysis originated with accounts owned by those who identified as “Trump supporters, ‘conservatives’ or extreme right-wing elements.”

“This finding does not imply that Mr. Trump supported these tweets, or that conservatives are more prone to anti-Semitism,” the report noted. However, it “does show that the individuals directing anti-Semitism toward journalists self-identified as Trump supporters and conservatives.”

In a statement on the findings, ADL CEO Jonathan A. Greenblatt expressed concern that the online harassment of journalists could interfere with their ability to do their jobs.

“The spike in hate we’ve seen online this election cycle is extremely troubling and unlike anything we have seen in modern politics. A half century ago, the KKK burned crosses. Today, extremists are burning up Twitter,” Greenblatt said.

“We are concerned about the impact of this hate on the ability of journalists to do their job and on free speech, which is why we established this Task Force,” the statement continued. “We hope this report hastens efforts to combat the surge of hate on social media. We look forward to working with Twitter, media companies, and other online platforms to limit hate and harassment and preserve freedom of speech.”

Hope Hicks, a spokesperson for the Trump campaign, responded to the report in a statement to the New York Times, claiming the campaign had “no knowledge of this activity and strongly condemn any commentary that is anti-Semitic.”

“We totally disavow hateful rhetoric online or otherwise,” Hicks said.

As the Times reported, though Trump and his campaign have not made explicitly anti-Semitic remarks this election cycle, the Republican presidential nominee “has trafficked in some anti-Semitic stereotypes.”

“In July, he posted an image on his Twitter account of a six-pointed star next to Hillary Clinton, with money seeming to rain down in the background,” Times journalist Jonathan Mahler wrote.

“Whatever Mr. Trump’s intentions, his candidacy has been treated as a call to arms by white nationalists, who often rush to attack Jewish journalists when they write something perceived as unflattering about Mr. Trump,” Mahler wrote.

Trump Refuses to Say if He Will Accept Election Results

Debate moderator and Fox News host Chris Wallace delivered a pointed question to Trump Wednesday during the third and final presidential debate, questioning the discrepancies between Trump’s comments and those of his spokespeople and running mate on the possibility of conceding the election.

“I will look at it at the time,” Trump said when asked about whether he would accept the election results. “I’m not looking at anything now. I’ll look at it at the time.”

When Wallace pushed the Republican candidate on the issue, Trump fell back on his widely debunked claim that the election is “rigged,” pointing to alleged voter fraud.

“If you look at your voter rolls, you will see millions of people that are registered to vote … that shouldn’t be registered to vote” Trump said.

“What I’m saying is that I will tell you at the time. I’ll keep you in suspense,” he continued.

Trump has repeatedly made this false allegation, though many of his fellow Republicans admit it has no merit. Studies and investigations have repeatedly shown that widespread voter fraud does not exist.

Trump, facing criticism for his comments during the debate, addressed his unwillingness to admit defeat should he lose the election during a campaign rally in Ohio.

“I promise and pledge to all of my voters and supporters, and to all of the people of the United States, that I will totally accept the results of this great and historic presidential election if I win.”

Since the debate, many have pointed out that it would be unprecedented for Trump to refuse to accept an outcome against him. “This is a premeditated attempt to delegitimize the result of any decision that doesn’t go his way—unprecedented in American politics in my lifetime,” Richard Reuben, a University of Missouri law professor, told the Guardian.

But as legal experts have noted, even if he or his campaign protest the results “if he loses by a wide margin he’s not likely to get far in court.”

What Else We’re Reading

The New York Times’ Charlie Savage examines what the law says about groping and what that could mean for Trump as he faces multiple allegations of sexual assault.

“In a lot of communities, poverty is hiding in plain sight,” Democratic vice presidential nominee Sen. Tim Kaine (D-VA) said while speaking this week in Detroit. “Wherever it is, we’ve got to challenge ourselves to tackle it.”

North Carolina’s 12th District is “the most gerrymandered district in America,” according to the Guardian.

Meet the Black women behind Clinton’s presidential campaign.

A Montgomery, Pennsylvania, man wrote to his local newspaper because he had some concerns about Clinton and her period.

A private prison company donated $150,000 to a pro-Trump super PAC, Mother Jones reported.