The Texas Democrat had the exchange during a Mineral Wells rally while talking about the need to curb mass shootings. (video courtesy of Beto O'Rourke campaign) Subscribe to The Dallas Morning News: https://www.dallasnews.com/subscribe/main/ Site: http://dallasnews.com Twitter: http://twitter.com/dallasnews Instagram: http://instagram.com/dallasnews TikTok: https://www.tiktok.com/@dallasmorningnews