“If a State refused to let religious groups use facilities open to others, then it would demonstrate not neutrality but hostility toward religion. The Establishment Clause does not license government to treat religion and those who teach or practice it … as subversive of American ideals.”

American ideals are founded upon "sound doctrine" concerning our Liberty and Freedom from oppression. The practice of Threskos religion is always acceptable, the practice of Threskeia religion is the melting pot of individualism. 

Ron , please explain those religions that you mention. I'm not familiar with those terms.

The establishment clause is: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof...". The occupying statist theocracy infesting this land has violated the 1st half of the clause, the 2nd half of the clause — the whole of the clause. An immoral progressive religion continues to grow through legislation, court rulings and executive action. And second, other religions are disallowed use or presence within the occupying statist theocracy's immediate influence. Through centralized government of control, religions foreign to the statist theocracy infesting this land as a whole owns and controls through established rule — IRS 508, 501c3, etc.