Police detained more than 4,300 people Sunday at Russia-wide protests against President Vladimir Putin's invasion of Ukraine, according to an independent protest-monitoring group.

Thousands of protesters chanted "No to war!" and "Shame on you!" according to videos posted on social media by opposition activists and bloggers.

Dozens of protesters in the Urals city of Yekaterinburg were shown being detained. One protester there was shown being beaten on the ground by police in riot gear. A mural in the city showing President Vladimir Putin was defaced.