Separation of Chruch and State?

As a Christian I can only make a stand based on my beliefs. By making my stand I do not exclude any other religion or interest from making their stand. In fact, I help ensure their liberty to stand for what they believe as I stand for what I believe. If Christians had stayed out of politics we would not have a constitution , a free form of government , a legal system based on the right and wrong as the Bible sees it. If Christians had not been involved from the beginning we would not have freedom for all religions to worship as they see fit. Islamic countries, as an example, do not allow that type of freedom to worship or make a stand. Why can pro gay marriage , pro abortion people, take their messages to the court of public opinion but Christians can only express their opinion in their churches? True free thinking individuals should welcome the opinions of all peoples. If my opinion differs from yours please tolerate my right to differ. Steve