Comment by roenxi

Yeah but that probably isn't going to what the original research is saying. Society is basically run by a tiny fraction of people (1-5% of the population range) and the rest are just along for the ride. Democracy is a major innovation where the majority has to nod along every few years or there is a mix up in who in the upper class gets to sit at the top of the tree.

From that perspective it becomes clearer what a 3.5% rule is getting at - 3.5% of the population mobilised is enough to overwhelm any ruling class that isn't on top of its game, especially if mass shooting of people is still of the table or if the 3.5% includes a lot of people from the upper classes. It isn't about whether an issue is supported by 3.5% of the population or more, it is a question of whether that fraction of society is actively trying to topple a government system.