What definition of "extremist" are they using? People who oppose the Russian invasion of Ukraine? (https://www.amnesty.org/en/latest/news/2024/02/russia-surge-i

What definition of "extremist" are they using? People who oppose the Russian invasion of Ukraine? (https://www.amnesty.org/en/latest/news/2024/02/russia-surge-in-abuse-of-anti-terrorism-laws-to-suppress-dissent/ https://www.amnesty.org/en/latest/news/2024/02/russia-surge-...)