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I hope they didn't kill the lions after that. Although I find it highly likely they did.
This video is sad enough to bring tears to your eyes. Nobody can blame the lions for this. Full blame goes to the people who have them "entertaining" like this. Lions and other wild animals should NOT be kept in little cages, beaten and abused into performing tricks for people's selfish amusement.
I would NEVER go to a circus exploiting wild animals like this.
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Also, I'd like to add to that video above, even when the animal is exhusted or ill, they are still beaten with bats and have hooks sliced into their flesh to keep them moving and performing.