It does not matter how many time it is said people never listen. Wild animals are not pets and they will do wild animal things, like bite you if you mess with them.
The video shows what appears to be a Russian man stopping at the side of the road to pet a trio of bear cubs. One of the bear decides the mans hand looks like a snack and clamps down on it. The cub tries to drag the man back into the weeds but the man is too strong and eventually frees himself.
Let us hope he learns his lesson and does not try and mess with a wild bear. Personally I think He is lucky mama bear did not decide to make an appearence.