Here’s a free idea, internet friends: In order to further reduce the already tiny number of actual white supremacists in our midst, let’s start a volunteer effort to distribute free genetic tests to anyone who shows up at a rally with any kind of sign, badge, flag, or insignia that indicates he thinks whites are a superior race.

Take a bunch 23andMe or Ancestry.com testing kits down to the site of the next Charlottesville-style rally and set up a table. Make it a challenge: spit in a test tube and get proof of your white superiority. Family tree research is already a popular activity in the community, why not help them along with some objective data?

The payoff, of course, is when a decent number of folks whose sense of self (and extracurricular activities) revolve around racial purity discover their own mongrelcy. And if even a few neo-Nazis discover that their great-great-great-grandmothers were Jewish, it will all have been worth it, right?

A large number of genetic test takers discover ethnic elements in their heritage they didn’t expect, and depending on how stringent your definition of “white” is—plently of marchers would certainly exclude the charming yet swarthy Nick Gillespie from their number, for instance—quite a few swastika wavers could be in for a surprise.