Volumes have been written already on the subject, hundreds of websites examine every aspect of the matter, and avvo is a Q/A forum for folks with real legal problems/issues.
Recommend you pursue your studies on through wikipedia, or one of the many websites (such as this one http://billofrightsinstitute.org/resources/educator-resources/americapedia/americapedia-bill-of-rights/first-amendment/free-exercise-clause/ ) for your studies
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