how do we get past the polarization? do republicans now believe they're more open to change about gun laws, terrorism, we'll talk to him about that. and how do we fight the enemy within? we have to know more about who these white nationalists think they are and how they think. we're going to take you inside the mind of a rage-filled white supremacist with someone who was one. let's get together and get after it. ♪ like i told you, we have brand-new video just into cnn tonight. it is exclusive footage of the dayton, ohio, gunman. in the two hours leading up to his murderous rampage. on this show, i don't talk about who these killers are. they are irrelevant in terms of why they did this and who helped them.