I haven't read United Nations Agenda 21. I'm going totally on second-hand information, largely from people I trust. Even if they're wrong, what I'm about to write stands, with good reason, on the evidence of what I've read, heard and seen.
They're saying they think there are too many people on this planet. Some say there should be 90% fewer people on earth. Some even go as far as to say the planet would be better off without humanity. (If that were achieved, who would make the evaluation?)
The rumor (if it is a rumor) is that there are those who consider themselves the elite in various parts of the world, would like to find an excuse to conduct mass liquidations of we, the excess, to bring the numbers down to a more manageable level. The simple logistics would seem quite daunting to the most ambitious mass murderer.
Crazed "environmentalists" are trying to stop, hobble, throttle, delay and criminalize every item of technology the civilized world regards necessary or convenient to live a comfortable, happy life. Without these technologies, millions would die of exposure, starvation and disease in a very small time period. Many Americans and Europeans, beneficiaries of this technology the same as the rest of us, favor this regression to the primitive. Do they actually think they'll be unaffected by the doom they advocate?
Ebola is a very formidable disease. It has killed thousands in Western Africa, and promises to kill thousands more. One prominent member of the US elite has moved deliberately to bring the disease to the United States.
Boco Harum, a particularly insane group of islamic savages, is also committing mass murder campaigns in Africa, while these same African governments refuse to allow the local villagers to acquire weapons with which to defend themselves.
The islamic state, another group of mental basket cases, is doing similarly in parts of the Middle East. They're threatening to franchise.
I wonder at the nature of the individuals who fund this activity and keep it going. Are they rehearsing for a larger series of coups, in order to see what works best?
Governments are ravenous in their desire to take control of the productivity of every working individual, giving undeserved benefits to the nonproductive, reinforcing their sloth.
Mankind has always had a suicidal element, and it usually ends up in government. I wonder what they think they'll do when they've eaten everything the productive class have made. It's beginning to look like removing ourselves from their reach is the best defense.