It started (in modern times) in the 60's at poetry jams. You can do it one-handed (i.e. while holding a drink) and you can also do it during a particularly impressive part of a performance, rather than waiting until the end.

Some groups have definitely taken it as a preference (sorry for the daily mail link, but it was the most succinct): https://www.dailymail.co.uk/news/article-3323166/Some-colleg... and tried to tie it to clapping as "triggering", but they're pretty uncommon.

One example of someone not-ironically actually stating that jazz-hands is better than the "triggering" clapping is the Oxford SU Woman's Campaign: https://twitter.com/womcam/status/580389025892175872

You can also

Yeah I’ve definitely been to events where quiet or no clapping is preferred (ex: poetry readings) but the OP claiming we aren’t aloud to clap at events anymore because it’s too violent sounds like someone who hasn’t actually been to a public event in the last year.

I'm sorry you misinterpreted my comment to mean all public events in existence.

Meh.

In fairness, there are a lot of people, making up a lot of things on this discussion thread. It's kind of disingenuous to only call this poster out.

I mean, ideologues are gonna ideologue.

I'm genuinely curious - what kind of ideologue am I?

It's hardly widespread, but it's absolutely happened: https://www.youtube.com/watch?v=moWe3rk7LzQ

It happening in rare instances isn’t sufficient for the OP to claim “we aren’t allowed to clap at events because clapping is too violent”.

I was replying to this statement, "They made it up."

They didn't make it up, proof was provided that they didn't make it up.

They made it up, because we are certainly still allowed to clap at events.