[Little Dragon]

Having read all that has been said so far, I want to share an idea that makes reference to the title of the thread. In the US, we have freedom OF religion, not FROM religion. It should be clear, but sometimes people don't seem to get it. The government cannot sponsor or favor any religion over others. That's it. That is freedom of religion, and that is the extent of separating government and church. The government cannot tell churches what to teach or preach. That been said, a Christian government official at a Christian event can be in official business and say God Bless. Same for Muslims and Jews and any other believer. His or her words are not the government's, but that of the person, even though acting in official capacity.

I give the example of Germany, which has had a very specific history, but can share some lights. In public schools, they teach religion. Teachers are government officials teaching religions. The kid (or the kid's parent) choose which religion they learn, but it is in a public space. Theology is taught in many public universities, same as philosophy or mathematics. Religion is present, though the government doesn't force anybody to believe or not believe in anything.

A government building in a Christian populated area has a cross. Should it have it? Only if government buildings in Muslim populated areas have the Crescent Moon or in Non-religious areas, have nothing. Government, as elected, represents its people.

Public display depends on the people being governed. I don't want to look, I don't look.

Another thing is passing laws favoring certain religious views. Then, we have an imposition. I don't want to follow, but then again, I could go to jail or pay a fine. That is wrong.

Atheist: I don't want my money to go into a cross in an official building.
Christian: I don't want my money to go into paying for an abortion under the healthcare reform.
Poor: I don't want my money to go into the rich's pockets.
Rich: I don't want my money to go into paying services that I don't use.

There are differences between actions of government that I may not like (including actions involving religions) and laws that impose religions or its practices on me.

If you can do something about it (not watching, not attending, keeping quiet) there is no imposition. If you can't or if something is expected from you, then everything is wrong with it.

Added:
BTW. As a Christian living in Spain (mostly secular society with reigning atheism), I know what it is to live in the minority. My positions stays the same.