https://www.backyardchickens.com/articles/
An article on understanding rooster aggression would probably be best in this subsection: https://www.backyardchickens.com/articles/categories/learning-center.11/
I think it's quite reasonable to expect a rooster to understand the difference between...
I gave my rooster, Rameses, a second chance, but his apparent aggression was only crowding and a single peck.
Had he attacked my grandchildren he'd be soup.