United CEO's response to passenger being dragged from plane made it way worse

United Airlines' CEO has responded to viral footage of a doctor being dragged from one of its planes. 

According to a person who says they were on the flight, the airline needed room on the overbooked aircraft to reposition crew for another flight. But when it couldn't find enough volunteers, even after offering $800, the airline selected the man, who is a doctor, and several other passengers to deplane.

But the man allegedly refused and was dragged off by police. 

"I apologize for having to re-accommodate those customers," CEO Oscar Munoz said in a statement posted to the airlines' Twitter account. 

Some people are now threatening to boycott the airline, using the hashtag #BoycottUnited. 

Here's the statement: 

Initial reactions to Munoz's response were negative.