Russian lawmakers have approved a bill that gives the government the power to blacklist websites containing what officials consider objectionable material.

The State Duma, or lower house of parliament, voted Wednesday on the measure, which proponents say is meant to protect young people from child pornography and information about suicide and drug use.

Lawmakers also passed a bill that makes libel and slander criminal offenses with punishment of up to five years in prison.

Critics say the new legislation is designed to suppress information and stifle dissent.