The demonstration was one of many across the country, joining the national 50501 Movement, which promoted 50 protests in 50 states in one day.

Hundreds of people, bearing signs and shouting “Stop the Coup,” gathered on Boston Common on a frigid Wednesday afternoon to protest President Donald Trump’s and billionaire Elon Musk’s rapid reshaping of the federal government. “This is a fascist takeover by an oligarch,” one protester said. “It’s just outrageous.”