article_snippet: There were an estimated 20,000 on the streets, while organisers claimed there were as many as 70,000.
article_snippet: Russian riot police, armed with batons, were observing this protest. 
article_snippet: The mood was sombre, with heavy security as police helicopters flew overhead and police boats patrolled the river.
article_snippet: The authorities are corrupt and don't allow any threats to The authorities to emerge.
article_snippet: Boris was uncomfortable for The authorities.'
article_snippet: Riot police lined the parade route but did not intervene as the protesters made the protesters way through the city .
article_snippet: On patrol: Russian riot police were observing a protest against the Kremlin, attended by thousands which has so far remained peaceful .