Bear in mind that while we have freedom to choose our own religion, in this country we are not guaranteed any absence of it (known as "freedom from religion"). The U.S. government was intended from the very beginning to be founded on Christian morals, but over the last few decades, more and more people wanted things their own way, and started trying to re-envision America as a liberal or "open-minded" nation. But in fact, by pushing Christ away, they're trashing the very heart of this land which we call home. Personally, I don't want to live in a country where Buddhists, Muslims, Hindus, and atheists have free reign, while every Christian initiative is told in some way, "You're a traitor, and we don't want you here."
I get so shocked sometimes, when liberals say stuff like, "I object to this! Christianity is offensive!", and no one bats an eye. Yet, when a believer in Christ declares the same thing about being persecuted in favor of other "beliefs", we're branded as virtual enemies of the state.