Lawmaker Vitaly Milonov said he would formally request Russia's telecoms oversight agency to shut down Facebook which has introduced a function allowing users to decorate their profiles with the rainbow flag of the gay rights movement.
"It is a crude violation of Russian legislation. Facebook has no age limits, it is impossible to control how many minors are there," Saint Petersburg lawmaker Milonov said on Russian radio yesterday evening.
"That is why it would be completely normal to pull the plug on Facebook in Russia."
Milonov said he would petition Roskomnadzor, Russia's telecoms oversight agency, and if that does not help he would appeal to the FSB security service and President Vladimir Putin personally.
"I would call on thousands of people and we will write to the FSB and Putin," he said.
"Any normal person would not leave this unnoticed. If Roskomnadzor does then they play on the side of those who whish harm to our homeland."
Milonov's words drew disdain from activists, and a picture of Milonov superimposed against the rainbow flag was making the rounds on social media.
To celebrate the US Supreme Court's ruling, the White House was on Friday lit up in rainbow colours.
Some activists said that Russia, too, would one day uphold gay people's right to marry but they would unlikely live long enough to see that day.
"Mostly likely I will not live to see the day when some democratic, honestly-elected president illuminates the Kremlin in rainbow colours for one day," journalist and activist Anton Krasovsky said on Facebook.
In 2013, Russia passed a hugely controversial law banning the promotion or display of homosexuality in front of minors.
