I know this guy who's a rabid anti-vaxxer who thinks the COVID vaccines are a bioweapon engineered to kill people as part of a shadowy conspiracy to lower the world population by a billions. He claims that vaccinated people are dropping dead of heart attacks left, right and centre and it's all being covered up. Recently he sent me some "evidence" of this claim which was a compilation of clips (many taken from live TV) of people collapsing or fainting, sometimes clutching their chests, overlayed with spooky music and the Pfizer logo in the corner. Don't you get it? All these people are collapsing because they took the vaccine!

Except within five minutes I was able to find many of those same clips in other videos - eg by searching YouTube for "people fainting" - and most of them predated the pandemic by years. Clearly some troll had just found a bunch of old clips of people collapsing and edited it together into a lazy piece of anti-vaxx propaganda. And it works! People fall for it, even though this particular clip took about thirty seconds to debunk.

My point is - I've seen videos before of people jumping from buildings. They're not hard to find online; the now-defunct r/watchpeopledie was full of them, as was Liveleak (RIP). It would be trivially easy to find a bunch of these clips, edit them together and give them a caption that claims they all happened recently in one place and are part of a disturbing new trend.

So I'm not convinced that this video you shared is what it claims to be.