Olympian Yelena Isinbayeva, the greatest women's pole vaulter of all time, on Thursday criticized two Swedish athletes for expressing opposition to Russia's anti-gay law.

At least two Swedish athletes, including high jumper Emma Green Tregaro, competed in the World Championships in Moscow with their fingernails painted in rainbow colors.

The protest comes amid rising concerns about how the Russian law will affect next year's Winter Olympics to be held in Sochi. Russia's “gay propaganda” law prohibits the positive portrayal of gay men and women in public venues where minors might be present.

“If we allow to promote and do all this stuff on the street, we are very afraid about our nation because we consider ourselves like normal, standard people,” Isinbayeva is quoted as saying by the Telegraph. “We just live with boys with woman, woman with boys.”

“Everything must be fine. It comes from history. We never had any problems, these problems in Russia, and we don't want to have any in the future.”

In a video posted on the website of Swedish daily Expressen, Green Tregaro said that a friend suggested she paint her nails in solidarity.

“I had a suggestion from a friend on Instagram that maybe I could paint my nails in the colors of the rainbow and that felt like a simple, small thing that maybe could trigger some thoughts,” she said.

Isinbayeva criticized the athletes, saying that they had disrespected Russia.

“It's unrespectful to our country. It's unrespectful to our citizens because we are Russians. Maybe we are different from European people and other people from different lands. We have our home and everyone has to respect [it]. When we arrive to different countries, we try to follow their rules,” she said in English.

Isinbayeva will serve as “mayor” of one of the Olympic villages in Sochi.