Legalize LA was a campaign that centered on a city what an estimated population of what in 2016?
Legalize LA:  Originating locally in Downtown Los Angeles, the company took the campaign national in early 2008. Los Angeles:  With a U.S. Census-estimated 2016 population of 3,976,322, it is the second most populous city in the United States (after New York City) and the most populous city in the state of California.
3,976,322