Opposition leader Anwar Ibrahim spoke at a 10,000-strong rally tonight to fight back over allegations of sodomy that he said were orchestrated by the government to keep its grip on power. <br />MCPX <br /> <br />Anwar, who spent six years in prison before a stunning return to politics in elections in March, has lodged a defamation suit over the allegations - the same charge that put him behind bars in this Muslim-majority nation in 1999.