In what era of human history before now have we had such thorough and widespread documentation of events both wonderful AND tragic. All those camera angles, all those photos, all that video and audio: it's hard to cover something up. Hard to hide evidence. Hard for police to quietly murder a black man and sweep it under the rug.
A person who videos INSTEAD of rendering aid, when their aid is needed, is a shithead.
But what do you expect? 100 people to all somehow help? We naturally now stratify into helpers and documenters. Both are important.