DENVER -- A performance from music superstar Madonna has fans across Colorado angry.

Madonna started her show at the Pepsi Center in Denver Thursday night with a gun scene, which she has used in previous performances.

Thousands turned out for the concert. 9NEWS received several calls Thursday night and Friday morning from concert-goers saying they were offended she used guns and violence as part of her show in light of recent events in the state.

KUSA Entertainment Reporter Kirk Montgomery spoke with Madonna's long-time publicist Liz Rosenberg on Friday. She told Kirk:

"This is Madonna expressing herself on stage as an artist. It's ridiculous to find a connection with the tragedy that happened in Colorado and this show. Madonna - like the rest of the world - was horrified and felt terrible about it, but you can't take violent art off the walls of a museum and you can't excise the third act of Hamlet - this is art."

KUSA