“Six billion might die”
Climate activists first.
One of Tom Clancy’s last books(I think it was Rainbow Six) that he actually wrote was about a plot by environmental extremists to kill off 99% of the population. All but a few select people.
Their plot involved releasing a weaponized form of Ebola at the closing ceremonies of the summer Olympics. Having the effect of spreading it throughout the globe.
Clark, Ryan Jr caught them and stopped the deployment just in time.
They gathered up the people involved in the plot and flew them out into the middle of the Amazon jungle. Stripped them naked and left them. They all were dead within a day or two.
Very likely. They don’t look as though they would do very well in a primitive environment.