Democratic presidential candidate Beto O'Rourke cut a campaign stop in Las Vegas short on Saturday.<br />CNN reports O'Rourke returned to his hometown of El Paso, Texas, following early reports of a fatal mass shooting there.<br />O'Rourke told a Las Vegas labor union forum that the incident shattered any illusion that progress on gun violence is inevitable.<br />There is no luxury in this democracy of sitting this one out....It is on every single one of us to make this right. Beto O'Rourke