President Donald Trump and former Vice President Joe Biden debated each other that night. The host running the debate, Chris Wallace, asked Trump if he would say white supremacist and militia groups were bad and tell them to stop hurting people and breaking property. Donald Trump asked Wallace to say the name of a specific group. Biden said "The Proud Boys." Then Donald Trump said "Proud Boys, stand back and stand by, but you know what? Someone's got to do something about Antifa." In English, "stand by" means "wait and be ready to act."