White supremacist and other right-wing violence are currently the deadliest active domestic extremist movements in the U.S. What's causing the rise of these movements?

White supremacist and other right-wing violence are currently the deadliest active domestic extremist movements in the U.S., according to data from several civil rights groups that track hate crimes and extremist violence. What's causing the rise of these movements? pic.twitter.com/YCSuJOYn0T

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