From an interesting (and very long) article I've recently read:
"A difference of opinion does not constitute dissenting behavior
Scriptural dissenting behavior deals only with church doctrines, rites and government. Some people, though, cannot differentiate between scriptural dissenting behavior and the modern, generic definition of dissent, which merely means “a difference of opinion.” So any censuring they see, of any kind, is viewed as morally wrong, a violation of one’s right to free speech, as put down in the First Amendment.
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
The problem with that view, is that a church is not a public institution, but a private one, and like all private institutions, it has certain rules which its membership is expected to obey.
We believe that all religious societies have a right to deal with their members for disorderly conduct, according to the rules and regulations of such societies; provided that such dealings be for fellowship and good standing; but we do not believe that any religious society has authority to try men on the right of property or life, to take from them this world’s goods, or to put them in jeopardy of either life or limb, or to inflict any physical punishment upon them. They can only excommunicate them from their society, and withdraw from them their fellowship. (D&C 134:10)"
