 This is a special report from ABC News. Trump assassination attempt. I'm Sherry Preston. As both President Biden and former President Donald Trump urge Americans to dial down the political rhetoric, former Homeland Security expert and ABC News political contributor John Cohen says... We are an angry, divided nation, and that anger and division has become intertwined in our political discourse. There are a growing number of people in this country who believe that violence is an appropriate way to express their ideological or political views.