In this passive construction, the subject is not a person, but a thing. In many cases X is the public/people in general, and a passive form of the verb is used in the Vている phrase.
この歌は若い人たちに 愛されています。
This song is loved by young people.
この新聞は地方の人たちに 読まれています。
This newspaper is read by people in the country.