Conversation so far:
What is Homicide: Life on the Street?
Homicide: Life on the Street is an American police procedural television series chronicling the work of a fictional version of the Baltimore Police Department's Homicide Unit.
What did David Simon do for Homicide: Life on the Street?
David Simon worked as a writer and producer.
What channel was the TV series Homicide: Life on the Street on?
Homicide: Life on the Street ran for seven seasons (122 episodes) on NBC.
What awards did David Simon win for the series Homicide: Life on the Street?

Question: What did he do after the series?
Self-contained rewrite: What did David Simon do after the series Homicide: Life on the Street?