Articles of Faith, pg. 181; “A self-suggesting interpretation of history indicates that there has been a great departure from the way of salvation as laid down by the Savior, a universal apostasy from the Church of Christ. Scarcely had the Church been organized by the Savior, whose name it bears, before the powers of darkness arrayed themselves for conflict with the organized body. Even in the days of our Lord’s personal ministry in the flesh persecution was waged against Him and the disciples.” – James Talmage
Titus 3:10-11; “A man that is an heretick after the first and second admonition reject;11 Knowing that he that is such is subverted, and sinneth, being condemned of himself.”
Paul warned us there would be apostates and gave us the standard of how to deal with them. This doesn’t mean the entire world apostatized!
General Handbook of Instructions 1999; “The Church warns its members against symposia and other similar gatherings that include presentations that (1) disparage, ridicule, make light of, or are otherwise inappropriate in their treatment of sacred matters or (2) could injure the Church, detract from its mission, or jeopardize its members’ well-being. Members should not allow their position or standing in the Church to be used to promote or imply endorsement of such gatherings.”
2 Corinthians 4:1-3; “Therefore seeing we have this ministry, as we have received mercy, we faint not; 2 But have renounced the hidden things of dishonesty, not walking in craftiness, nor handling the word of God deceitfully; but by manifestation of the truth commending ourselves to every man’s conscience in the sight of God.3 But if our gospel be hid, it is hid to them that are lost.”
In other words, don’t ever think it’s okay for you as a Mormon to speak your mind in public about the Mormon Church.