New York State Senator Marison Alcantara (D-Manhattan) was joined by the dog's family, along with animal activists and their pets in a protest against the airline.
They also unveiled a new pet passenger bill of rights called 'Kokito's Law', in honor of the dog.
United has been under fire lately for its handling of pets. Last Monday, Kokito died when a flight attendant forced its owner to put it in the overhead bin.
One day later, a dog was mistakenly flown to Japan instead of Kansas City.
And in a third incident, a flight from Newark was scheduled to arrive in St. Louis on Thursday, but it instead landed in Ohio, because a dog was mistakenly put on board.
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