Khalil Mustafin, convicted of involvement in the activities of the radical Hizb ut-Tahrir party, recognized as a terrorist organization in Russia, was reduced by the Supreme Court from 22 years to 21 years.

A case has been initiated against a resident of the Sverdlovsk region deliberately false report of an act of terrorism for calls about "mining" various objects, including the Temple-on-the-Blood and the Sredneuralsky Monastery. On September 21, 2020 it became known that in Sverdlovsk region, a suspect in telephone hooliganism was detained, reporting on “mining” various objects, including the Temple-on-the-Blood and the Sredneuralsky Monastery.

September 21, 2020 updated federal list extremist materials. The list was supplemented by Nazi and anti-Semitic books, materials of radical Islamists and a book by K.Yu. Dushenov "Orthodoxy or death". Update of the Federal List of Extremist Materials of September 21, 2020 5100. Printed edition of Alfred Kotz's pamphlet titled: "Lead and follow" on 136 pages, beginning with the words "Fuhrer! Give the order - we will carry it out!

In September 2020, the city of Petrozavodsk, Republic of Karelia, initiated a criminal case for public calls for extremism against a local resident who published xenophobic comments on a social network. On September 10, 2020, in the city of Petrozavodsk of the Republic of Karelia, a criminal case was initiated under Part 2 of Art. 280 of the Criminal Code (public calls for extremism).

Employees of the Ministry of Internal Affairs took away a part of the circulation of the Union of Marxists newspaper, which was handed out by an activist at the entrance of a St. Petersburg plant, to check for extremism. On September 18, 2020, activist Yevgeny Poluektov, a supporter of the Union of Marxists, was brought to the police in St. Petersburg. He was interviewed by employees of the center for combating extremism.

In September 2020, Guzel Leman, an activist from St. Petersburg, reported that she received a series of messages with racist insults and threats after a request to rename the Russian Cinema section to Russian on the Kinopoisk portal. On September 12, 2020, Guzel Leman, an activist from St. Petersburg, began to receive insults and threats after she turned to the developers of the Kinopoisk website with a request to rename the Russian Cinema section to Russian.