United Airlines is in trouble for treating one of its passengers badly. Security guards dragged David Dao, a 69-year-old doctor, out of his seat and pulled him along the floor and out of the plane. Dr Dao became unconscious and his face was covered in blood. He lost two front teeth and had a broken nose. The doctor paid for his seat but United Airlines ordered him to get off the plane because a flight attendant wanted to sit down. The doctor said he had to work the next day because he had many patients to see at his hospital. The United staff didn't listen to him.

Dr Dao is going to sue United Airlines. Dao was born in Vietnam. He escaped from the Vietnam War. He said being dragged off the United Airlines flight was "more horrifying" than living through that war. His daughter said: "What happened to my dad should have never happened to any human being….We were horrified and shocked." A video of Dr Dao being dragged off the flight went viral on the Internet. Over 150,000 people signed an online petition asking the United Airlines CEO to resign. He refused. He did not apologize at first. He said Dr Dao was at fault for his injuries.