The Taken star is a longtime opponent of plans to remove the popular tourist attraction and replace the carriages with vintage cars, arguing the move will rob drivers of their livelihoods.He recently invited New York City Mayor Bill de Blasio to view the stables where the horses are kept to see that the animals are not being mistreated, but the politician snubbed the offer.Neeson has now renewed his calls to the mayor in a candid piece written for the New York Times.In the article, Neeson writes: "It has been my experience, always, that horses, much like humans, are at their happiest and healthiest when working. Horses have been pulling from the beginning of time. It is what they have been bred to do."Horses and their caretakers work together to earn a decent livelihood in New York, as they have for hundreds of years. New York's horse-carriage trade is a humane industry that is well regulated."Before we lose this signature element of New York's culture and history - instantly recognisable to the millions of tourists who visit our city and contribute to its economy - the least the mayor can do is come down to the stables and see how the horses are cared for."I urge Mr. de Blasio to meet the working men and women whose jobs are at stake and to start a dialogue that will safeguard a future for the horses that the majority of New Yorkers want."