This was featured on the news one time...
Its suppose to say that dropping the baby makes it land in safe hands (The blanket) and since it falls down fast, the evil spirit gets pulled out and leaves the baby, giving it good luck and fortune. This is an equivalent to a Latino girl turning 15 (Quinceniera). It is a religious/cultural thing and from what I can tell, the baby isnt crying from pain but from falling. Most likely because they are scared from either the fall or the people (Considering a baby would cry if it randomly saw 5 additional faces in his house, imagine a whole town).
Also, Baby yoga is weird as forget. I am sure that baby is going to suffer brain damage...
You guys also make it sound like they hit the baby's hand with a sledgehammer or something. They aren't even "Throwing" the baby...