Saw an interview with this guy's lawyer and something he said struck me as symbolic of much of the 'alt right' movement. He said this guy, who has been described as a white supremacist, anti-Jewish and anti-gay, who claimed to be a Seminole among other things, was lacking an identity. His father was Filipino, but abandoned the family as a baby. He was, the lawyer thought looking for something to belong to, some kind of identity, and he latched onto Trump.
With religion largely gone, with idea of 'clans' and tribes gone, with smaller and smaller families, a lot of people seem to be lost and seeking something to be a part of.