A Russian MP has warned women not to have sex with foreign tourists during the World Cup for fear of biracial babies.
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Head of the Family, Women and Children's Affairs Committee Tamara Pletnyova said Russian women and children would be taken away from their country if their "intimate relations" led to marriage.
"They come to me in the committee, girls crying that their baby was taken away, was taken, and so on," she told a local radio station.
Ms Pletnyova said she hopes Russian women marry for love, no matter the nationality of their spouse, as long as they are a Russian citizen.
She said women who had babies with foreigners following the 1980 Olympics in Moscow often "suffered" as single mothers.
"It's good if it's one race, but if it's another race, then they really [suffered]," she said.
"We should have our own babies."
In the past, biracial Russians were often referred to as "children of the Olympics".
In a country where less than 1 percent of the population is black, dark-skinned Russians still face frequent racist discrimination.
In May, a report detailed 19 discriminatory chants used inside stadiums sports clubs during the 2017-18 season, including monkey sounds, homophobic slurs, and neo-Nazi songs.
During the World Cup, Moscow and St Petersburg will be home to 'diversity houses' for football fans of racial and sexual minorities. An anti-discrimination hotline has also been set up.
More than 1 million international tourists are expected to attend the World Cup.