The year 1968 remains a watershed moment in an era of revolution and upheaval.

With the world engulfed in social, political and especially sexual upheaval, the year witnessed the brutal rejection of a relatively brief papal document that sought to clarify the Church’s teachings on family life and the regulation of births. Humanae Vitae (The Regulation of Birth) remains one of the most polarizing papal encyclicals of all time, but also one of the most prophetic in foreseeing vividly the immense dangers of a contraceptive culture that ultimately came to pass.

http://www.ncregister.com/daily-news/humanae-vitae-the-courage-of-pope-paul-vi-stood-out-during-a-tumultuous-196