"You just can't — you can't immediately discount this," Limbaugh added. "The left is this insane, they are this crazy."

Tarrant, who was in Pakistan just five months ago – amid what he wrote was two years of planning for Thursday's massacre, posted a lengthy manifesto before the shooting in which he declared his desire to exploit racial, cultural and political divisions in the United States.

At three points in his manifesto, the shooter also states his intention to spark a civil war in the United States by triggering crackdowns on the Second Amendment. In his laundry list of motivations, the shooter spends the most amount of time discussing this goal, which he believes will ultimately lead to a "fracturing" of the U.S. along "cultural and racial lines." –Breitbart