This Washington Times op.ed. piece is a bit more on the mark

Quote from here:

Please, America's Christians, please humble yourselves, discard the ego, stash the attitude, and look at the issue of public religiosity from any non-Christian perspective. If you are not part of the solution, you are part of the problem, and that is something you need to start taking responsibility for.

Indifference in the face of adversity is a position of ignorance. Can we get you to stand up for what is just, please? We don't want to pick a fight, we want peace. Please help make that a possibility.

The separation of Church and state is of more importance than you think it is, and it is not an atheistic agenda. The separation of church and state is the equalizing factor for all religions. If we afford one religion privilege, it is not fair not to do so for all others, and how do we afford all other religions privilege without going to absurd lengths? The only viable answer is separation.

Pretty much right. There are deeper arguments than this for a functional separation of church and state, and I think that they are pretty convincing from most perspectives. But the above will do. You can't, in all fairness, have the state favouring a particular religion over other religions and over non-belief.