The litmus test for confirmation that some Kagan opponents are applying -- that the courts must always defer to the anti-gay hostility of the majority that still prevails in parts of the country -- belies our nation's Pledge of Allegiance to liberty and justice for all. Less than 30 minutes into his crusade, Mikah Meyer was reminded of why he took it up. Several men in a passing vehicle shouted something vile at him. A day later Meyer, who is gay, was reminded