Radical de-population has always been the goal of the ‘deep ecology’ crowd.
Shortly after the fall of the Berlin Wall, but before Radial Islamists were on the rampage, a senior CIA official gave a speech about what he thought would be the biggest security threat the world would face, absent the Evil Empire.
His answer was “Radical Environmentalists who believe that the earth’s human population must be dramatically curtailed. Many of them are highly educated biologists working in University labs, where they have access to technologies which could allow them to reach their goals.”