Mankind could reasonably claim ‘innocence by ignorance’ for the crime of “anthropogenic global warming” until 1984. That’s when the documentary “The Greenhouse Effect and Planet Earth” (31 minutes) was televised. If you watch just the first minute, you’ll see why.
https://www.cbc.ca/archives/entry/the-greenhouse-effect-and-planet-earth
Indeed, oil companies themselves, at that time, also warned the public, as did every successive US President (until the current one). We can rightfully blame any number of shady characters for disinformation campaigns and such; but, in the end, almost all of us are to blame to varying degrees. Thus, with this back story,
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