One thing I fucking hate is the people who don't pull over to take pic of Bison or anything else. Annoying as hell and what I hate about Yellowstone is the tourons (moronic tourist) my wife came up with that term. It fits.
When were you there?
Same thing happened to us last month but a bunch of cars pulled over to play with the cub. Fortunately the Momma didn't turn a dozen people into confetti https://imgur.com/a/DLVUxsJ
There's a bear, it's way up by that parked camper (I think they were throwing food at it even), but after we started rolling again I put the phone down so didn't get a decent shot