Now that the dust has settled from Donald Trump's first State of the Union, it's a good time to look beyond the speech and take a close look at how the audience reacted to it. As the video above from the New York Times points out, there is a complex set of politics behind when and how politicians applaud. The needs of consituents can temper a politician's reaction, as can party affiliation and their place within the government. Check out the video, and see if you're not watching the audience more intently the next time you watch a political speech.