A Canadian man was arrested at Miami International Airport after attacking multiple ... witnessed the attack and "tried to break up the fight" but was punched in the arm by McDougall.

Cameron Dylan McDougall, 28, is facing battery charges after he first allegedly attacked a victim walking to his gate at Miami International Airport around ... picking a fight with officers ...

"And it's a very popular place for people to come in and out of south Florida where they're not going to Miami International [Airport]. Which is much more congested with our commercial carriers." ...