Breeding like rabbits
(media.scored.co)
Growing by itself isn't bad, but growing to the extent that they do is, as you can see from their complete lack of resources, billions of shitskins and most of them live in filth, population numbers aren't the only thing that matter. It's important to realise that growth always has to end somewhere, or even slow down, trying to copy what somewhere like India or any of those other places does is just very short sighted.