Human aggressive roosters are a PITA...Just because the rooster is aggressive. Doesn't mean it's a bad rooster. It's only doing its job. Protecting his position and his ladies. I once watched a falcon come flying by over my rooster and pounce on one of the hens. My "aggressive rooster" didn't flea and head for the hills. He ran towards the falcon rammed it! The falcon went flying off dazed what just happened. You guys need to stop fearing aggressive roosters like they are a threat to society. They are only doing their job. We need to remember chickens aren't just senseless animals, they are just like any other pet. It's like putting a guard dog down for biting a robber. Yeah they can scratch you. That's why you routinely clip their claws. If you have kids. Keep the rooster in an enclosure or keep an I on the child.
NON human aggressive roosters can protect the flock too, they're actually smarter - knowing what is a threat and what is not.