Soy Sigil

The Deathly Hallows symbol from Harry Potter, except that it's being brandished on the bodies and/or vehicles of Soy Boys, Soy Girls, or other other Muggles for the sake of attention-seeking. Its use is usually a red flag for someone possessing radical extremist liberal beliefs, so those found wearing it should be avoided or approached with caution.

As I was walking through the parking lot, I became uneasy when I noticed a Prius with a Soy Sigil plastered on it, next to a Bernie 2016 bumper sticker.