I'd need more info to say yes or no
The video is enough proof that the dad is a terrible father.
Why should the child be "taken away" and not the (alleged) abuser? If the child had pushed his father off of the ramp would you ask should the father be "taken away"?
“The reasonable man adapts himself to the world: the unreasonable one persists to adapt the world to himself.
Therefore all progress depends on the unreasonable man.” ― George Bernard Shaw, Man and Superman
I don't want to rush to judgment based on one incident, but I watched the video just the body language and the way he walked away without even looking to see if he son was OK struck me as indicative of a potential abuser. Child services should definitely investigate the dad.
Slipping into madness is good for the sake of comparison - Unknown.
Good lord, this was a little kid... what, 4... 6? What kind of a father does that? If I was the boy's mom, I'd be so incensed I'd be back in court requesting that the father's visitation be supervised, before the kid was thrown off a bridge and told to fly or die.