LONDON (Reuters) - About 1,000 people are believed to have been killed in clashes between supporters and opponents of Libyan leader Muammar Gaddafi, the British government said in a human rights report published on Thursday."Whilst there has been no official death toll, several sources report that approximately 1,000 people have already been killed and many more have been injured during the recent violence," the report from Britain's Foreign Office said.Read More... More on Libya Protests