<p>Listen to historian and A12 creator Niki Hemmer describe the roots of today's conflicts and the present and future of extremism in America.</p>

Listen to historian and A12 creator Niki Hemmer describe the roots of today's conflicts and the present and future of extremism in America.

Overcoming Extremism: Episode 6 -- Niki Hemmer

Leaders in the fight against extremism sit down with former Mayor of Charlottesville, Mike Signer, to discuss ways to combat the threat posed by white supremacy and other forms of hatred.

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Overcoming Extremism: Episode 6 -- Niki Hemmer

Overcoming Extremism: Episode 6 -- Niki Hemmer