For Example, well-known Washington-based columnist, Carl Rowan, often wrote about the ills of firearms ownership. Until, that is, he shot and wounded a teenager who trespassed on his property.
The white teenaged boy claimed he wanted to try Rowan's swimming pool. Rowan, an African-American, retaliated with deadly force using a firearm.
That's when the news came out that Carl Rowan, gun-control advocate, actually possessed a license to own firearms."
http://www.freerepublic.com/focus/f-bloggers/1490446/posts
Thanks G.Mason for the link.
IIRC, he didn't have a license and was only able to avoid prosecution by asserting his Patent of Nobility.