Have you seen how big a polar bear is dawg? 1000 pounds with a 40 kph speed (faster than any human in the world) and 3 meters height. They have insane AP too and without weapons, NO HUMAN in the world is getting past it's durability lol. I kid you not it's more likely for all the men to break their hands through it's punches than for the bear to be damaged even a bit. You gonna need 50-75 humans to hold it down minimum and it isn't even that big for that many humans to fit in that little space. Plus the original tweet for this prompt said the polar bears have home court advantage meaning it's on snow (as if the situation isn't unfair enough). The polar bear could sleep and the humans won't damage it. Plus it's got insane claws and bite force with insane teeth which are the 2 most important offensive factors in the wild on land. A gorilla is fodder compared to a polar bear. Polar bear won't be pushed past low-mid diff in this scenario