Where is the line?

I'm struggling with this one. Rachel Held Evans - "God and our political platforms..."

"Because God is not a flag pin.

God is not a beam in a political platform.

God’s name is not something to use to score political points. It's not something to throw around lightly or to use as a weapon against a political opponent."

Where is the line between God being a part of everything we do and using God to fulfill our own wants? Where is the line between openly expressing our faith and offending others? Sometimes the line is clear.

Recently there has been a discussion about prayers before college football games as some schools are replacing it with a moment of silence. My libertarian side says that is a good thing. My practical side says people need to have thicker skin than to be offended by a 30 second prayer. My Christian side hates to see God removed from another part of my life.

And if we are going to ban prayers before games, should we also stop playing the National Anthem?