They have actually done more to undermine the original intent of the Bill of Rights protections on free speech than any other group. The Bill of Rights was created in a period where there was serious risk of institutionally imposed beliefs, either from religions or from the Government. The First Amendment was designed to protect the individual against the institutions.
Today, the intent has been perverted into interpretation that "religion" refers to institutionalized religion instead of the individual's "way of worship" which the framers intended. This protection for religion came amidst attempts by many cities/townships to impose a religion on its individual citizens. It was an imposition of belief upon the individuals, not upon the institutions. Therefore, reading the protections in any way other than as applicable to protection of the individual would be taking it out of context of the times which caused its wording.
Jehovah's Witnesses caused (almost single-handedly) the Courts to view religious organizations as the entities protected by the First Amendment and caused the undermining of individual free speech rights. Corporations have much debt to the political activism of Jehovah's Witnesses. The attempt to change the interpretation of law through the Judicial Branch of the Federal Government is nothing like the defense of the good news recommended by Paul. It was blatant political activism, and nothing less.
AuldSoul