Shawn McBreairty, 53, made a name for himself in 2021 after he appeared on Tucker Carlson's now-defunct Fox News show and claimed he would not be allowed at his twins' daughters graduation over his opposition to the district's teachings on race.
McBreairty, who called himself 'America's Most Dangerous Dad,' had been banned from the properties of Cumberland's Maine School Administrative District 51 after he padlocked a billboard to a school fence demanding superintendent Jeff Porter be fired.
Friends of the activist and his wife Patti have been posting their condolences on social media, with several local news outlets reporting that McBreairty died on Monday. The details of his death remain unclear.