Where it came from
What the myth is
What the real problem is
The truth is that “overpopulation” is merely a myth. The population bomb was just a fairy tale. Aldus Huxley was wrong. The sky is not falling and the government does not need to take any drastic measures. However overpopulation continues to be a popular myth. Why? Because it often fits and in hand with social and enviromental agendas which require some sort of emergency to encourage people to want to undergo drastic social and political change.
The REAL problem, however, is under-population, broken families, poverty, etc. caused by poor social programs and solutions.
Bonus: What did John Lennon think about over-population?