Battleground Episode 6: GOP convenes on a battleground rocked by political violence

Republicans gather in Wisconsin to officially nominate former President Trump on the heels of a shocking assassination attempt in Pennsylvania. How will Saturday?s event?s shift the focus, and the security at the convention in Milwaukee. And where does the race go from here? Also, how can we lower the temperature in our politics? We talk to a noted mental health expert who helps us understand how our brains process political discourse - and decisions - in these deeply divided times.