MOSCOW — Numerous Russian news media outlets vowed on Thursday to curtail their coverage of the State Duma, the lower chamber of the Russian Parliament, a day after its ethics commission exonerated a lawmaker accused of sexual harassment by several female journalists.

Some two dozen publications have declared a boycott of the 14-member commission and of the lawmaker, Leonid E. Slutsky, a member from the Liberal Democratic Party of Russia, a right-wing nationalist group, who is the chairman of the international affairs committee. Some organizations said they were stopping all professional interaction with Mr. Slutsky, while others like the popular Ekho Moskvy radio station announced a broader ban, withdrawing reporters from the Duma altogether.

“Ekho Moskvy considers the State Duma an unsafe work location for journalists of both sexes,” said Aleksei A. Venediktov, the station’s editor in chief. The Parliament is widely viewed as a rubber stamp for the Kremlin, and its members rank among the least popular public officials in Russia.

The boycott was the first broadly public action to focus attention on sexual harassment since the #MeToo movement erupted in the West. While the stories of harassment resonated with some Russian women and men, the broader public response was yet another condemnation of the West, which is portrayed as so in the thrall of liberal values that men and women can no longer play their natural roles.