David Duke is an "American white nationalist, antisemitic conspiracy theorist, Holocaust denier, politician, and former Grand Wizard of the Ku Klux Klan"(Wikipedia). On Friday, 22 July 2016, Duke announced he is running for the republican nomination for the US Senate for the State of Louisiana.
The video above is Duke's YouTube announcement. There are several significant nonverbal signals in this ad, however one in particular stands out and is discussed below.
The above video ad of David Duke's ends with this expression (which appears on the video from 2:22 - 2:25). Note how the right side his mouth is down-turned in what many would label a slight frown (yet it's not), while his left side is up-turned in an attempt at a "social smile". This mouth configuration is in no way indicative of a sincere smile. This "smiling out of one side of the mouth while frowning out of the other" (aka a "Twisted Smile") is highly characteristic of duplicity and deceit and thus a profoundly valuable red flag.
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