Not my manger (thankfully), but I worked near people whose manger did this. I’d be working when suddenly I’d hear the guy yelling and screaming at some employee who did something wrong. Even if the guy did something incorrect, the proper managerial response is never screaming at them in a public location.
The manger is still working for my company, but I’m not near his employees anymore. I’m not sure if age mellowed him out or if he still screams at his employees.