Sure, but again, what does that have to do with beliefs being forced? Gays get married. So do straight people. If you don't believe in gay marriage, you are free not to get gay married.
Or, instead of a prop, it's symbol of another religion. It's the same argument that got the 10 commandments tossed out of courthouses. Again, everyone is free to believe whatever they want but the government is everyone, not just Christians. Go ahead and put mangers on private property.
I don't need a pic. I need you to explain how the photo edit is "forcing someone's beliefs on someone else."