This is the equation that the zookeepers are focused on. You can reduce the population by reducing births and increasing deaths.
Reducing births thru feminism, gender warfare, homosexuality, castrating children, etc.
Increasing death by putting poisons in the food, water and air, increasing depression with the TV, war, crime, etc.
Their actions are easy to understand thru this lense.
Also reducing fertility. Fertility is waaayyy down from what it used to be.
And it isn't just developed countries. And it isn't just the human animal.
https://www.amazon.com/Count-Down-Threatening-Reproductive-Development/dp/B085G5PRFY/