Anti-gay Russian activists have sent a court summons to the star's New York City home, claiming they suffered "moral damages" following her gig earlier this year.
The singer handed out pink bracelets at her 'MDNA' show in St. Petersberg back on August 9 and asked the audience to raise their arms in support of homosexual rights.
However, nine plaintiffs want to see Madonna prosecuted for the action as it is illegal to promote homosexuality in St. Petersberg, reports Russia Today.
The local law - which was passed in March earlier this year - forbids the propaganda of sodomy, lesbianism, bisexualism and transgenderism, and pedophilia to minors.
The pro-Kremlin group Trade Union of Russian Citizens wants Madonna to pay out 333 million rubles ($10m/£6.7m) in damages, as they claim the star also stomped on an Orthodox cross.
"She insulted believers' feelings, she promoted homosexuality when there were children at the concert and this is forbidden in St Petersburg," union spokesperson Darya Dedova was quoted as saying.
"We, the residents of the cultural capital, suffered a colossal moral damage."
Madonna has yet to respond to the complaints and did not show up at court on the specified date of October 11. The first hearing has now been postponed until October 25.
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