There seems to be some occurrences of revelation within the Mormon church that have been a result of (or at the very least coincided with) societal pressures.
The Word of Wisdom was received as a result of Emma Smith complaining to Joseph Smith about cleaning up tobacco spit from the floor of the School of the Prophets. The Manifesto was issued around the same time that Utah wanted to become a state in a country where plural marriage was illegal. The revelation to extend the priesthood to all males was issued in an era of a civil rights movement.
Can society be a catalyst for revelation? Does God need to wait for a prophet to approach Him with a problem before issuing a revelation? Can any society issue put enough pressure on the Church that a revelation changing policy/doctrine be issued?