Yes, it's just as difficult to watch as you'd imagine.
The premise of this video is pretty simple to explain. Forgiato has made an ad where a woman comes home, finds her husband in bed with another woman, and then destroys his Ferrari with a sledgehammer. The Forgiato moment comes when she gets to the wheels and is unable to do any damage. It's hardly the most original of ideas, but it might have provoked the odd chuckle were it not for the fact she's beating on a 458 Italia with a sledgehammer.
We have some pretty serious doubts the bodywork would dent like that, or the glass shatter in that manner, so there's probably something else going on here. But still, it makes you flinch.