Russia on Friday labeled superstar rapper Oxxxymiron, who is popular with young Russians, as a “foreign agent,” according to the Interior Ministry’s website.

Oxxxymiron, the stage name of 37-year-old Miron Fyodorov, has described the Kremlin’s Ukraine offensive as a “disaster and crime”.

His name has been included in a register of “foreign agents” on the ministry’s website – a term used to target Kremlin critics.

The rapper is one of thousands of Russians who have left Russia since the Kremlin sent troops to Ukraine and organized concerts in support of Ukrainian refugees from abroad.

Popular Russian science fiction author Dmitry Glukhovsky – who also denounced the offensive and was wanted on a list for “discrediting” the Russian army – was also labeled a “foreign agent”.

The author of the 2002 post-apocalyptic novel Metro 2033 was added to the list after a Russian court ordered his arrest in absentia over his criticism of the offensive.

Feminist politician Alena Popova – who has long campaigned for legislation on domestic violence in Russia – and Radio Free Europe/Liberty journalist Irina Storozheva were also added to the list of foreign agents.

The label, commemorating the Soviet-era “enemy of the people,” was used extensively against opponents, journalists and human rights activists accused of conducting foreign-funded political activities.