<p>The attacks last weekend reignited fears about how well guarded the country is against extremist violence at home. John Cassidy and Steve Coll join Dorothy Wickenden to discuss what really fosters hate groups, and how Clinton and Trump are addressing the issue of homeland security.</p>
The attacks last weekend reignited fears about how well guarded the country is against extremist violence at home. John Cassidy and Steve Coll join Dorothy Wickenden to discuss what really fosters hate groups, and how Clinton and Trump are addressing the issue of homeland security.