I cringe to hear some of these stories. Like some other guys on this forum, I'm a life long (or long time) South Dakota boy. I'm not the world's best pheasant hunter by any stretch of the imagination, but I've harvested enough birds in my life that jumping on public ground where someone else is or will soon be hunting is something I absolutely would never intentionally do. I've accidentally entered large public tracts and bumped into folks and had the same happen to me. Anymore, I drive past all parking spots on public land to do my best to ensure that doesn't happen.
That said, I do have a couple observations.
1. Mr. I'm From Here - this guy, by virtue of being a local, has some sort of God given right to public land within a radius of his hometown. He sadistically enjoys confrontation and butting heads with out of state "city boys". This guy is worse when he's with his buddies as he is even more apt to screw up someone's hunt for a laugh. Sadly, no one ever taught him manners or put him in his place.
2. Mr. I Spent Good Money To Be Here - on the other hand, a guy that has paid good money to travel and hunt in South Dakota feels that public land is like a public restroom and he isn't going to wait to piss just because someone else is there.
Both these guys act like they've never shot a rooster before and have zero consideration of others in their efforts to do just that. Sadly, they seem to have one piece of knowledge - how to butt in and flush those birds a person has been working for the past hour.
Again, I'm sorry to hear of these interactions and can only emphasize that not all South Dakotans behave this way. In fact, a lot of us are happy to see others in the field and want to let them enjoy their hunt, and move along to find our own place to engage with creation.