"The practice of sport is a human right. Every individual must have the possibility of practicing sport without discrimination of any kind and in the Olympic spirit, which requires mutual understanding with a spirit of friendship, solidarity and fair play," Google quotes Olympic Charter in its doodle.

Triggering angry criticism from the West and even calls to boycott the Sochi games, Russia adopted in June a ban on homosexual "propaganda" among minors, a law denounced by critics as discriminatory and aimed at dissent.

Gay people are often blamed for not helping overcome Russia's demographic problems and face ostracism from the resurgent Orthodox Church, which has fostered increasingly close ties with the Kremlin during Putin's 13-year rule.

The 2014 Olympic Winter Games is due to take place in Sochi from February 7-23, and the XI Paralympic Winter Games is to be held in the same venue from March 7-16.