 I'm Kai Wright. Coming up on Notes from America, we'll talk with national security experts about rising political violence. What's new and what's been around a long time? How do we understand it in a global context? And what did go wrong with security at Donald Trump's rally? And we'll separate out what we actually know about the assassination attempt from the noise of misinformation and disinformation that's spreading rapidly on social media. That's all just ahead on Notes from America right after this.