In a 2024 interview with Living Proof podcast, legendary New York City graffiti writer ZEPHYR (aka Andrew Witten) says that he is vegan:
ZEPHYR: "[...] I'm vegan. So, I try to stick to a plant-based diet. [...]" [1]
Side note: ZEPHYR stole his graffiti name from the 1970s "ZEPHYR" skate team (Z-Boys) in Santa Monica, California.
ZEPHYR's biography (New York: Regan Books, 2001) of fellow graffiti writer and friend Dondi