Answer: by calling out participants on Twitter.
Twitter users have turned their attention to identifying participants of the Charlottesville, Va., white supremacist rally, which turned deadly after a car plowed into counter protesters Aug. 12. Since Sunday, the hashtag #GoodNightAltRight, started by the account @YesYoureRacist, has attempting to identify participants, according to TechCrunch. The Twitter account already reports getting at least one of the rally’s attendees fired for their participation. According to a Recode article, the practice is not a violation of the platform’s terms of service, but the posted information cannot include sensitive information like a phone number, Social Security number or address.