Over the objections of reputed gang figure Raymond "Shrimp Boy" Chow's lawyers, a federal judge has ordered that the government's evidence in a sweeping criminal case that includes political corruption charges against state Sen. Leland Yee must be kept secret for now. U.S. District Judge Charles Breyer imposed the restrictions Monday on every lawyer and defendant in the case, finding the material should be kept under wraps while both sides prepare for trial. Breyer rejected the free speech arguments of Chow's lawyer, J. Tony Serra, who insisted he should be able to reveal evidence to combat the government's public charges.