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DENVER — Twitter was abuzz Friday with disappointed Madonna fans after they say Madonna showed up to her Denver concert Thursday night over two hours late and opened with a song about murder.

According to the report from KDVR in Denver, fans say she came on stage in a crowded Pepsi Center with fake guns and pretended to shoot the audience in a city where many wounds are still fresh following the Aurora theater tragedy in late July.

Madonna is set to perform at the Sprint Center on October 30th.

Click here for more on this story from KDVR-TV.