Report gives new details on Trump assassination attempt suspect's 'descent into madness'

The 20-year-old gunman who tried to assassinate President Donald Trump at a rally in Butler, Pennsylvania, last summer experienced a "descent into madness" leading up to the incident, during which he was "having conversations with someone that wasn’t there," a new report says. 

The New York Times, citing thousands of pages of school assignments, internet activity logs and interviews with dozens of people who knew Thomas Matthew Crooks and the investigation surrounding him, among other documents, reported this week that "he went through a gradual and largely hidden transformation from a meek engineering student critical of political polarization to a focused killer who tried to build bombs." 

"There was a mysteriousness to Thom...