A demonstration against the extradition of a British computer hacker to the U.S. has been held outside the American Embassy in London. Garry McKinnon is accused of hacking into U.S. military computers in 2001 and 2002. The protesters demand McKinnon, who was diagnosed with a neurological disorder, be tried in the UK, and his family have written a letter to Prime Minister Gordon Brown insisting the governments intervention on the issue.