I've only been able to watch this video, and read the comments, once. It's too much for me. The video is in Spanish. Essentially, a little dog gets hit on a busy street and no one stops to help it. Suddenly another dog comes into the street and drags the injured one to safety. I've read an unsubstantiated assertion that both dogs are okay, but I don't really know if that's a fact.
I don't know for sure what happened here. Watch and decide for yourselves.
On Huffington Post, the comments below the video are worth reading (just scroll down.) There are a lot of animal haters out there. Some people claim the second dog is simply going to eat the injured dog. I think that such haters can't bear a non-human being heroic. It begs the question of the uniqueness of humanity and, of course, themselves. Because animal haters are really afraid, afraid of looking at themselves in an objective light and realizing that they are not unique, special or more worthy than any other living thing. This is threatening to them.
And that's really what it's all about. Not other humans in general, but themselves.