An NYPD captain who was transferred to a less desirable role after being caught on video bashing NYC Mayor Zohran Mamdani as “an embarrassment” has become a veritable folk hero with an army of supporters backing him for speaking his mind about the radical socialist. Republican pols and other high-ranking conservatives are now taking up Capt. James G. Wilson’s cause, and defending his Constitutional rights. They say the department’s decision to ship Wilson from the 94 th Precinct in Brooklyn –