The privatization of the Earth's carbon through multinational corporations buying all the carbon credits neoliberal governments price out of reach of ordinary businesses and civilians enables globalists to reduce CO2 in the atmosphere lower than is necessary to support gardening.

Below 150ppm all plants will starve to death, and this will utterly destroy natural ecosystems and gardens alike, leaving humanity utterly dependent on Big Agra, that owns all the carbon through carbon credits, for food and life itself.

It is already illegal in Oregon to collect rainwater that falls on your roof.  

Without deploying modern technology and opposing institutional power over natural resources that destroy the ability of individuals to provide their own existentially necessary goods and services, like food and water, we will be forced into smart prisons...er, cities, and become chattel to overlords that own the multinational corporations.

Eventually, low tech solution like gardens and rain barrels will not be enough to keep us alive.  We will need indoor aquaponics and cryptic water and power sources to provide our life sustaining resources and remain secure from corporate overlords.