![Stephen Colbert called on Trump to take action this time on gun control.](http://web.archive.org./web/20171003224143im_/https://www.fairfaxstatic.com.au/content/dam/images/g/p/k/8/i/z/image.related.wideLandscape.300x169.gytr7o.png/1507066198657.jpg)
Stephen Colbert and other late night hosts get serious, plead for tighter gun laws
All the late-night TV shows started out on a serious note on Monday, as the hosts addressed the horrific tragedy in Las Vegas, the deadliest mass shooting in modern US history.