Three gals stepped puppy to death

It is sad to see a circuit of video on Facebook, it shown the video of three gals stepped on the puppy. They killed the puppy, heart break and tearful watching it. It was a long video, I didn't have the heart to watch it to the end. First you will see the gals kicking the puppy. They are underage girls! I think it would be just three gals, how about the one that video their actions?