On Tuesday, Matthew McConaughey, the Academy Award-winning actor, made hands-down the most powerful case I have ever heard for gun reform in the modern era. His 20-minute speech from the podium of the James S. Brady briefing room in the White House — named after a high-profile victim of gun violence — was not that of just another Hollywood A-lister leveraging their celebrity to draw attention to a particular pet issue; this was different. This was raw. It was visceral. And it hit home.