The Agenda 21 meme stems from a legitimate 1992 United Nations resolution regarding sustainable development, which eventually became a centerpiece for various internet conspiracy theories. Online, the meme often portrays the document as a secret blueprint for global totalitarianism, population control, and the abolition of private property. It gained significant traction in the early 2010s and saw a resurgence during the 'Great Reset' era. Memes typically use the phrase 'Agenda 21' alongside imagery of the UN logo, futuristic smart cities, or dystopian landscapes to satirize or warn against perceived overreach by international organizations.