Michael Kenneth Williams (November 22, 1966 – September 6, 2021) was an American actor. He played Omar Little on the HBO drama series The Wire from 2002 to 2008 and Albert "Chalky" White on the HBO series Boardwalk Empire from 2010 to 2014. He earned Primetime Emmy Award nominations for his performances in the HBO television biopic Bessie (2015), the Netflix drama series When They See Us (2019), and the HBO series The Night Of (2016) and Lovecraft Country (2020). He had a recurring role in the NBC sitcom Community from 2011 to 2012. He also had supporting roles in a number of films including Gone Baby Gone (2006), The Road (2009), 12 Years a Slave (2013), Inherent Vice (2014), and Motherless Brooklyn (2019).