1960 – He began his distinguished career in law enforcement, as a patrolman in San Jose, California.
1970 – He received his doctorate in criminology at the University of California at Berkley.
1972 – He was a distinguished professor at Texas Southern University and at Howard University.
– He was the associate director of the Institute for Urban Affairs and Research and held the rank of professor of public administration and director of criminal justice programs.
1975 – He became sheriff of Mulnomah County in Oregon.
1978 – Atlanta Mayor Maynard Jackson selected him to serve as Atlanta’s Commissioner of Public Safety.
1982 – He was a police chief in Houston, Texas.
1990 – His services were tapped by Mayor David Dinkins to serve as Police Commissioner of New York City.
1993 – President Clinton appointed Dr, Brown to his cabinet as Director of the White House Office of National Drug Control Policy, where he helped change the government’s policy in its war against drug abuse.
1997 – Brown was elected Mayor of Houston, Texas, and reelected twice. As Mayor, he presided over what has been labeled the most prosperous six-year period in the history of the City.