Moscow police detain 90 protesters.

In Mother Russia, police protest YOU! From Moscow Times:

Police thwarted an anti-Kremlin protest organized by the Other Russia opposition group on Sunday, seizing demonstrators and shoving them into trucks. Moscow police detained 90 people, including the group's co-leader and a Moscow Times reporter.

About 60 protesters also were detained in St. Petersburg, Interfax reported.

There was no sign of former chess champion Garry Kasparov, one Other Russia co-leader, at Triumfalnaya Ploshchad, on Tverskaya Ulitsa, where he had vowed to hold a demonstration despite being denied permission.

Kasparov and his allies in the Other Russia said they want to draw attention to Russia's economic troubles and to protest Kremlin plans to extend the presidential term from four years to six. Kremlin critics say the planned constitutional change is the latest step in a retreat from democracy and is designed to allow Prime Minister Vladimir Putin to return for another 12 years as president.