Is This Dad Laughing at Kids Slipping on Ice a Jerk or Just Having Winter Fun? [VIDEO]

Maybe it's just me, but after a couple of slip and falls, I'd be looking for salt or a sign in an attempt to prevent an injury.
Is it innocent fun or bad parenting...and how about when the kids joins in and laugh along with Dad?

You will notice the last trio of kids that slid actually tried to knock each other down, and yeah, I chuckled a little at that.  Am I a bad parent? Is this Dad?

[EpicViralTV]