تلگرام - امپراتوری سياه به کارِ پولِ دار پَولِو دورو

Last bastion of freedom of expression or playground for extremists and criminals? Opinions are divided on the messaging service Telegram. Just like on its mysterious founder, tech billionaire Pavel Durov. Is this man an uncompromising advocate of radical freedom or an accomplice of criminals of all kinds? Author Aleksandr Urzhanov searches for answers.