New York City Mayor Zohran Mamdani has written a letter expressing solidarity with activist Umar Khalid, who is currently detained in Tihar Jail under the Unlawful Activities (Prevention) Act. Mamdani, who recently became the first Muslim and Indian-origin mayor of New York, met Khalid's parents during their visit to the US in December. The letter, shared on social media, reflects on Khalid's words and states, "We are all thinking of you." Mamdani has previously spoken out in support of Khalid, including reading excerpts of his prison writings at a New York event.