WATCH: Video of Baby Being Thrown Into Pool Sparks Debate

I'll admit, when I first saw this I was a little alarmed. But after doing some research, I learned that this is a method used in infant swim classes to teach infants to adapt in water and roll over so they don't drown. The instructors are highly trained so I don't think there was any harm here, but the internet thinks differently. The mother says she has received death threats online. What are your thoughts?