Didn't help that the coat he was wearing looked too big and he was doing an awkward move with his hand holding the sleeve up. He looked feeble. They should have definitely filmed that better, by either digitally putting DeNiro's younger face on a young actor's body, or done it in a way where they showed just the foot of a different actor stomping on the hand or something. Not a deal breaker either way but a weird thing to have shot and thought, "Yeah, that looks good. That's a wrap!"