Zombies attack unsuspecting victims. Is this a prank gone too far? A lady fainted from fright! (Video)

This is a frightening prank done for the hidden camera show of Silvio Santos in Brazil.  Unsuspecting passengers at the metro are attacked by a hoard of zombies. Even though I laughed at the reactions of some of the ladies, I also felt bad for some of them, specially the one at the end.  And I have to confess I felt a little scared too. 

It seems that the laws of Brazil allow for these kind of pranks. This is not something that could be done in the US. Can you imagine the lawsuits!

What do you think about it?  Is this a prank gone too far? 

Marcos Fragoso