As NBA commissioner Adam Silver investigates the alleged racist comments of Los Angeles Clippers owner Donald Sterling, here's a look back at some questionable behavior from years gone by.

Yet with this list, there has been no punishment from the NBA.

1981: Donald Sterling buys the San Diego Clippers for about $13 million dollars.

2006: The U.S. Department of Justice sues Sterling for housing discrimination, claiming he had made statements against renting to Latino and black tenants. Sterling settled the lawsuit in 2009, with a payout of $2.765 million.

2009: Longtime Clippers executive Elgin Baylor files a civil lawsuit for wrongful termination against Sterling and the organization. In the lawsuit's initial filing, Baylor said Sterling embraced "a Southern plantation-type structure." During the trial, a bevy of allegations of racism were levied against Sterling, many involving former Clippers players including Danny Manning.

2014: Website TMZ.com releases an audio recording of a man the site says is Sterling speaking with a female friend and deriding her affiliation with several prominent black people.

The woman at the head of the latest scandal involving Sterling is V. Stiviano, this mistress of Donald Sterling.