How a white nationalist leader wants to go mainstream

With the election of Donald Trump, racist groups of all stripes are hoping their message will be more widely accepted. But will they actually go mainstream? The NewsHour's P.J. Tobia sits down with Richard Spencer, a leader of the so-called “alt-right” -- a mix of white nationalism, neo-Nazi beliefs and hard-edged populism -- who has energized a tiny group of passionate followers.