On Thursday, the pillars of Russia’s independent broadcast media collapsed under pressure from the state. Echo of Moscow, the freewheeling radio station founded by Soviet dissidents in 1990 and that symbolized Russia’s new freedoms, was “liquidated” by its board. TV Rain, the youthful independent television station that calls itself “the optimistic channel” said it would suspend operations indefinitely.

And Dmitri A. Muratov, the journalist who shared the Nobel Peace Prize last year, said that his newspaper Novaya Gazeta, which survived the murders of six of its journalists, could be on the verge of shutting down as well.

“Everything that’s not propaganda is being eliminated,” Mr. Muratov said.