HUFFINGTON POST

WASHINGTON, DC - NOVEMBER 20: at an Alt Right ( alternative right) conference hosted by the National Policy Institute in Washington, DC on November 18, 2016. The think tank promotes white nationalism and critics accuse them of being racist and anti-semitic. The chairman of the National Policy Institute, Richard Spencer, has been permanently banned from entering the UK, and was deemed a "national security threat" after his arrest in Hungary in 2014. He was recently banned from Twitter in a prominent purge by the company this week. (Photo by Linda Davidson/The Washington Post via Getty Images)

WASHINGTON, DC – NOVEMBER 20: at an Alt Right ( alternative right) conference hosted by the National Policy Institute in Washington, DC on November 18, 2016. The think tank promotes white nationalism and critics accuse them of being racist and anti-semitic. The chairman of the National Policy Institute, Richard Spencer, has been permanently banned from entering the UK, and was deemed a “national security threat” after his arrest in Hungary in 2014. He was recently banned from Twitter in a prominent purge by the company this week. (Photo by Linda Davidson/The Washington Post via Getty Images)