>>512347449
most of those are MURICA happenings, didn't even know about Charlottesville or the Las Vegas shootings, and who in the world is Mike Brown? None of those things' impact is still felt nowadays. A "true happening" as you define it, OP, should affect the whole world as the whole world talks about it and knows about it because every person is somehow influenced by it.

Actual List:

2022 Ukraine: I'd include Gaza, but Ukraine caused worldwide inflation, resurrected cold war sentiment and accelerated the bipolar world order. Since then we're no longer in a "peaceful" situation with other major countries

2020 Covid. only MAJOR HAPPENING since WW2, changed lives and politics forever.

2020 Floyd protests were kind of the pinacle of woke, things started to switch after that worldwide so I give you that

2016 Trump election: MURICA thing, but Trump is such a historical figure and his influence impacted and is impacting the world..alas..definitely deserves the spot. Things were never the same after him

I'd say Trump being elected was far more significant than Obama, who has been a pretty average president