Can you interprete this sentence, specially worse flop part?

Question

As a English learner from Asia, this sentence is really difficult for me.

The only thing that's been a worse flop than the organization of non-violence has been the organization of violence.

What is that?

Answer 1

A "flop" is something that is unsucessful, like a play that is poorly attended is called a flop. In this case the sentence is saying that the only thing that is more unsuccessful than non-violence is trying to organize for violence

Answer 2

Neither of these organizations has effectively promoted its cause.