The arraignment of accused Sept. 11 mastermind Khalid Shaikh Mohammed and four top Al Qaeda lieutenants opened Saturday in a heavily guarded island courtroom with the so-called “Gitmo 5” launching a silent protest, refusing to cooperate, listen to translations or even answer fundamental questions about a process that could end their lives. The long-awaited trial began with defense lawyers speaking for the alleged terrorists and arguing that the protest was over their clients’ anger about alleged CIA torture and mistreatment at the prison on the southern rim of Cuba. … (Updated at 10:14 a.m., May 5:) Three hours into the...