I think it was in Wyoming, or Montana where atheists filed lawsuit to force State Troopers to pull up crosses placed by them to remember fallen Troopers who died in service along the highways. The crosses abridged "separation of church and state" or some such argument. They were just remembering and honoring their friends, but they had to pull up those roadside crosses because they "offended" some atheist.
In Montana they have crosses up for anyone who is killed in an auto accident.