The paradox of tolerance means that to prove you're tolerant, you need to be trying to blind and/or murder anyone who you think might start saying something you disagree with.
NEW THREAT: Antifa Plans Acid Attack on D.C. Free Speech Rally, Promises To Blind Attendees - Big League Politics
Attendees at an upcoming free speech rally have been threatened with acid attacks via social media. Acid mixed with wax so it sticks, penetrates the skin, gets in the bloodstream, and causes cardiac arrest.