Here, what is officially known as a heckler attempts to inform The Trump about the September 11th attacks. Martin Hill, whose website is LibertyFight.com, originates from Los Angeles and has been driving hundreds of miles to Trump rallies (read his own post here). The video below shows the scuffle following Hill's "messaging" at a December 21, 2015 Michigan rally, and below it is the full news video in which you can much more clearly hear the gallant way in which The Trump responded to the interruption.
Unfortunately, the news video showing the full speech does not embed. Please start at the 20-minute mark for Trump's handling of the issue in the video linked here.