Ya know, I think that 30-35% figure is applicable across all populations in all countries in all eras. It's just the nature of humanity. Fortunately, about 95% of the time they splinter and fight amongst themselves, cause they're morons, are their effect on society is marginalized. But every now and then, when conditions are just right, they bloom...like red algae. And we gotta drop everything we're doing and start cleaning up. Just a thought...
Tip of the cap to the Cowboys snark.