That is, of course, entirely orthogonal to the actual problem being: those people out there are being murdered, this needs to be stopped, and people responsible need to be brought to justice.
Then you repeat the experiment, but you have replaced a certain number of black balls with an equal amount of red balls.
Wouldn't you expect to see more red balls the second time around?
Of course the number of climate activists has risen, as we see the disastrous effacts of climate change more and more clearly and frequently on a global scale.
We also see a global political movement that has quite effectively prevented measures against climate change, using disinformation and propaganda and, as shown in the article above, deadly violence.
In case of rabbits and wolves, more rabbits -> more food for wolves -> more wolves.
I fail to see the link in the case of activists and killers.
Wolves prefer to raise better quality of offspring, not more. Rabbits on the other hand just raise more offspring and don't care much for them since food is plenty.