Cane Corso? They’re a an old breed of mastiff. Italian. Mastiffs aren’t known for being vicious. I know several people who have them and I wouldn’t describe them as sociopaths.
Mastiff breeds are very territorial and protective. They might not be aggressive in all circumstances but they can be triggered and change demeanor on a dime. All mastiff breeds are derived from the molossus war dog. The lists of most dangerous dogs are heavily populated with mastiffs: Tibetan mastiff, Pakistani mastiff (bully cutta), South African mastiff (boerboel), Caucasian mastiff (ovcharka), and other mastiffs. I'm not sure how you are defining vicious but mastiffs can be aggressive and dangerous, particularly in the hands of inexperience dog handlers.
I was probably thinking of Presa Canario, which is a mastiff but also a fighting dog.
There are sociopaths breeding mastiffs to pits to obtain supersized pitbulls and evade breed specific bans.
“No, this isn’t a pit/ bull terrier/ American Staffordshire. It weighs 140 lbs, way out of their range.”