The article doesn’t say how. It only says that it has happened.

The interesting part is the very end:

The onslaught against migrants that the Russian nationalist movement has unleashed, in concert with the police, has become so virulent that even some of Putin’s erstwhile defenders can’t stomach it. Despite being a member of Russia’s military alliance, the government of Tajikistan recently called for its citizens to stop visiting Russia amid the roundups. The leader of Chechnya, Ramzan Kadyrov, slammed the Kremlin for its campaign of “persecution based on nationality or religion,” which he called a “messy inquisition of citizens of foreign countries.”

Kadyrov is hardly a Kremlin critic. Back in 2010, he told me of Putin, “I love him very much, as a man can love a man.” But there comes a time when enough is enough.