This is the rest of the story: Mom drives mini-van into ocean...intentionally...with her kids in the vehicle. 

I am showing this because it has a happy ending due to the quick thinking of others on the beach, including lifeguards, that got out there in time to rescue the children, including the baby that no one initially saw.

The mother is pregnant and is seen walking away.  Is this "pre" postpartum depression?  I have no idea.  But, the video is assaulting and provoking.  We'll hear more, but for now the kids are safe.