Socialist NYC mayoral frontrunner Zohran Mamdani celebrated his recent nuptials with a lavish, three-day affair at his family’s ritzy, secluded Ugandan compound — complete with masked security guards and a cellphone jamming system, The Post has learned. The gates of the bustling, private compound, which sits in the wealthy Buziga Hill area outside the capital city of Kampala, were heavily guarded by military-style, masked men this week, with guests streaming in and partying until midnight, according to sources in the town who wished to remain anonymous for security reasons.