This document discusses the concept of "positive system disruption" and how United Smart Cities aims to be a positive system disruptor. It summarizes the theory of system disruption put forth by Jeffrey C. Walker, which argues that persistent social problems remain due to a lack of systemic change. United Smart Cities brings together city governments, the private sector, and United Nations agencies to find innovative solutions to urban challenges that also address the UN Sustainable Development Goals. By facilitating collaboration and partnerships between these different actors, United Smart Cities aims to disrupt current systems in a way that transforms and scales solutions for cities worldwide.