[keketi]

How about this: https://en.wikipedia.org/wiki/2025_Nepalese_Gen_Z_protests#9...

September 9, 2025 - Protesters storm the Nepalese parliament, ransacking it and setting it on fire. Homes of leading politicians are also torched and the politicians themselves attacked.

Soon thereafter, the prime minister resigned along with other ministers and the president dissolved the parliament and scheduled a new election.

I think that counts as a successful rebellion or revolt.

[hannasanarion]

The Gen Z revolution would have gone nowhere had the Nepalese Military not launched a coup, removed the existing government from power at gunpoint, and asked the protesters who to replace them with.

So, fine, there's a third condition: when the entire military mutinies, leaving the regime with no armed defenders.