Battle of death

I forgot the name of the TV series, but there was a scene where people are watching from above like an audience. While below, there are two people fighting, a battle, and one must die.
I heard that this is actually true and happened in history, but every time I google it I can't find any information. Does anybody know what I'm talking about??

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Comments ( 3 )
  • Sounds like the colosseum in Rome

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  • a-curious-bunny

    Your thinking of the movie

    The legend of awesomeist maxiumust

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  • my_death_my_way

    This is in lots of shows. Too many to count. Off the top of my head it was in The 100

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