“There were 1.5 million people” at my 2017 inauguration — “the largest audience ever.”
RealityIndependent estimates put it near 300,000–600,000. Obama's 2009 inauguration drew roughly 1.8 million. Metro ridership backed the smaller figure — 193,000 riders by 11am versus 1.1 million in 2009. This is the claim that launched “alternative facts.”

