Morning Briefing: White Supremacist Arrested for Planning 'Mass Casualty Event'

The FBI arrested a White Supremacist who allegedly made online post claiming that he was planning to 'conduct a racially or ethnically motivated mass casualty event.'

Morning Briefing: Alexander Lightner has been reportedly “accused of posting online threats to carry out mass violence has been arrested and charged with making an interstate threat and a weapon violation, federal court records show,” and a search of Lightner’s home by law enforcement found “propaganda regarding white supremacist and accelerationist ide…