Political extremists of all stripes love Twitter, which has struggled to curtail online harassment and ban trolls from the popular social-media platform. But members of the so-called “alt-right” have been particularly vocal on Twitter this election cycle, promoting and retweeting Donald Trump with often hateful abandon. And while Trump has said he abhors racists, who make up a not inconsiderable subset of alt-right Twitter, white supremacists apparently love him, using pro-Trump hashtags at a surprising rate, according to one new study.

People who follow white-nationalist accounts on Twitter are “heavily invested” in Trump, according to a just-published report from George Washington University’s Program on Extremism. Researcher J.M. Berger, an expert on extremism in the United States and online, found that hashtags related to the Trump campaign—including #trump, #trump2016, and #makeamericagreatagain—were among the top 10 hashtags used by those identified as Nazi sympathizers, and in the top 5 hashtags used by white supremacists. The most retweeted hashtag among both groups was #whitegenocide, a term that Berger helpfully defines as “the notion that the ‘white race’ is directly endangered by the increasing diversity of society.” (Users in the Nazi category, it should be noted, are treated as a subset of white nationalists in this study, and identified based on how much they express admiration or sympathy toward Adolf Hitler and other Nazi ideology. Diversity can be found in even the most inhospitable places.)

Far-right extremists are not supporting Trump merely because he is the most conservative presidential candidate, either. According to the study, the top white-nationalist hashtags in 2012 did not mention then G.O.P. nominee Mitt Romney, but rather made “broad references to the mainstream poilitical right,” such as #gop and #teaparty. (Needless to say, #whitegenocide did not appear in these lists at the time.) Berger notes that Trump’s popularity on the far right may be connected to a recent surge in white nationalists on Twitter, whose ranks have increased by 600 percent since 2012.

While Trump has repeatedly tried to distance himself from his white-nationalist fans, like former K.K.K. leader David Duke, the Republican nominee hasn’t been able to stop them from cheering his harsh anti-immigration rhetoric. Despite his recent outreach to the black community, white-identity groups have seen in Trump a candidate who appears to reflect their fear of multi-culturalism. His constant call to “take America back” is apparently just the kind of dog-whistle, whether intentional or not, that has made Trump the favored candidate of Twitter racists everywhere.