No mask, no flight — that's the policy at a growing number of airlines. When one passenger refused to wear one, he was thrown off the plane, and he posted about it immediately on social media. Brandon Straka, a conservative activist and President Trump supporter, boarded an American Airlines flight Wednesday in New York. He caused a commotion and flight staff told him he must deplane. According to a New York Times reporter on board, once Straka was booted off the flight, people applauded.