But be aware in reading Brennan's opinions that Brennan was a Liberal shill for the extremist agenda of the ACLU.
Sadly, in this corner of Constitutional jurisprudence, that extremism as embodied in Lemon has triumphed in court to give us these awful and antiConstitutional rulings.
As is usual, I agree with a few things Brennan did, and disagree with others. Nevertheless, the proper course of action is for Judge Moore - if he gets no relief from the Supreme Court, as I expect - is to change the law.
I suspect that someday fairly soon, the Court will take on an establishment case and revise the Lemon test to make it a bit more sensible, but I highly doubt they'll choose Judge Moore as the avenue for that. Until then, it's the law, and we don't get to pick and choose which parts of the law we obey. That would make us liberals ;)