This is an actual Malcolm X quote on a template here going by the name of "Malcolm X quote." You're free to use it.
Malcolm X had been with the Nation of Islam. If you were from New York City as you claim to be, then you've seen them, especially in those trains you claim to ride under the snow covered streets you say Mamdani did not clean.
Nation of Islam are Black supremacists. They believe that Whites are inferior to Blacks, and call us the White Devil. You can read hilarious articles about it in their newspaper (pale skin and blue eyes are a result of living in caves during the Ice Age; one out of five White people are born with tails, zany stuff like that) or look it up online nowadays. As a rule, they hate all White people, no exceptions.
Now if you look as to the date of that quote, in all likelihood you will find that it was prior to Malcolm X's trip to Mecca, in which he realized his racism was wrong, and proceeded to move away from it. His breaking away from the Nation of Islam for various reasons is believed to be the reason for his assassination.
There are other quotes of his to use you can look up instead of having to make them up.
Not that the sentiment is necessarily wrong - politics being politics, and lying to the masses in particular demographics to achieve certain goals is not exactly exceedingly rare. Heck, we got a guy in the White House right now who smiled at the very darker toned people he wants to kick out of the US and convinced many they were better off if they got him elected again because of the price of groceries because it wasn't them he wanted to kick out, just the rest of their family. As you can see from the polls, buyer's remorse as it sinks in for the second time continues to rise.
Across all colors.