My immediate reaction is that this is staged. The sets are placed in an unnatural position plus they aren't even on. I'm not sure that I've ever been to an electronics store and seen televisions for sale that aren't powered on. What's more, the actions of the 'shopper' aren't natural as Kibaruk mentioned.
The TV furthest to the right somehow falls without its base attached. Bases are usually screwed on and would fall over with the set. The 'shopper' clearly pushes the two sets behind him over with his left hand. The sales attendant just happened to be in the perfect position to watch it all go down. And last but not least, comments are disabled for the video on YouTube (because they knew they would get a lot of "this is fake" comments).
and on top of that, there is NO CABLES ATTACHED to the tv''s