Yes.
You do of course want to look before you leap, but once you've looked, don't just stand there watching.
Just a thought that crossed my mind, I remember seeing a news report a few years ago on either ABC's Prime Time or 20/20 (it may have even been NBC's Dateline) where the reporter covers various incidents which occured against victims while people just stood by and watched offering no help when help was clearly available. The one I remember most from this report is where a woman was being chased on a bridge on foot where cars were tied up in traffic one night. She was running between cars as a man chased her. Somebody managed to videotape the attack, but nobody came to her rescue. If I remember right, she was killed.
I don't know why this is. 40 years ago, if a man was publicly cursing and carrying on with profanity in a public place like a restaurant real men (plural) (and I don't mean "macho" men) would have told him to shut his dirty mouth or suffer the consequences to say nothing of someone hassling a lady or beating on an old man.
Now we sit by in passivity as though the violation or taking of another human being was just a spontanious form of entertainment or curious event.
Why? I guess it's because we live in such a self-absorbed and spoon-fed media entertained culture. Everything is graphically given to us over TV and movies in explicit detail that we are numb to it when we see it in real life.
And/or we live in such a passive effeminate culture.
My .02 cents worth.
BTW, that old man in the video will probably never fully recover from those blows. It's VERY difficult for old people to heal from wounds and bruises, also they get them A LOT easier than when they were younger (my late grandmother and her late brother who were in their 80s used to get small bruises and bleeding under the skin all the time from just bumping into doorknobs or from some other kind of simple bump or scratch. It would take forever for it to go away if at all)