^
It seems to me that this man's behavior cannot be justified, no matter what nation or creed he may belong to. You can't blame his environment for his gambling addiction to this extent. We make the world around us, and if he wanted to, he was not surrounded by gambling, but by walking in the park with his granddaughter. He chose to gamble and brought himself to what I would call an inadequate state.
Try to keep an eye on your relatives because such stories can happen to anyone.
His activity can't be justified. When we gamble, it shouldn't affect the surrounding. What the old man have done is really bad and it is time for him to walk with his granddaughter and play with her. What he have done is completely opposite to it. Beyond certain age it is time to take rest and not to get pressurized. Surely while losing, he could've felt bad and his health might've got weakened. As mentioned everyone needs to be careful handling their kids, because we don't know the state of mind people have. It can be relatives, close ones or friends, addiction can take them to any extent.