OK, I'll begin.
The Earth is in a crisis, with population expected to reach 10 billion within the next few decades. Clearly, something drastic must be done to save the Earth, and to save the human race from extinction if the Earth is rendered unsuitable for human habitation.
The governments of the world, or preferably a one-world government controlled by an unelected body of intellectuals and scholars, need to implement drastic policies to reduce the population of Earth to an ideal number of 500 million people.
The way to do that is to, obviously, encourage women to have as many abortions as possible, and to expand the definition of "fetus" to include children up to one year old so that they may also be terminated. Gradually, as the public accepts that drastic population control is needed, the legal allowable age for child termination can be increased, so that eventually any dependent minor can be terminated upon the instructions of its parent or guardian.
To further hinder population increases, family formation should be discouraged through tax penalties and regulations. Marriage between heterosexual couples should be taxed heavily so that only the wealthiest (or genetically superior) couples can form families and conceive children in the normal way. The non-desirable portion of the population (minorities, the poor, the white working class) should be encouraged to adopt non-traditional lifestyles, like homosexuality, transgenderism, and other alternatives so as to prevent them from breeding normally.
To further reduce population, the economies of the world should be forced to de-industrialize so that excessive populations can no longer be supported. A reduction of technology levels in the agricultural industry will ensure that farms are less productive, and less able to feed the billions currently inhabiting the planet. This will lead to widespread famine, but that is a necessary to reduce populations to the target number of 500 million. Central planners will ensure that government leaders, intellectuals, and other members of the elite have enough food to survive, and even have excess food for themselves and the servants chosen to survive with them.
Naturally drastic policies that lead to deindustrialization and widespread famine will be considered genocide by some backwards thinking people, and there will be resistance, possibly violent resistance. That is why it is necessary, prior to the implementation of this policy, to disarm the population, especially so-called "law abiding citizens" who would form the core of any resistance to progress.