The American Civil Liberties Union (ACLU) on Thursday filed a federal lawsuit on behalf of Sam O’Hara, alleging that his constitutional rights were violated when Metropolitan Police Department officers handcuffed and arrested him while he was “peacefully protesting” against the troop deployment in D.C.

A D.C. man filed a lawsuit Thursday claiming he was detained for playing Darth Vader's theme from the "Star Wars" while protesting National Guard troops patrolling the city during President Trump's cr...