article_snippet.sent: Rio Ferdinand was hit by an object thrown from the crowd during the Manchester derby in December 2012 .
article_snippet.sent: Footage on You Tube showed the unrest when United played City in a late kick-off at Wembley in 2011 .
article_snippet.sent: City won that FA Cup semi-final, but 34 arrests were made due to crowd trouble outside the stadium .
article_snippet.sent: That clash, won by City 1-0, started at 5.15pm and was marred by a series of skirmishes on Wembley Way and on coach parks close to the stadium with 34 arrests made amid scenes some fans described as 'a free for all'.
article_snippet.sent: After November's derby at the Etihad Stadium, won 1-0 by City, video footage captured dozens of fans fighting outside a nearby pub around 90 minutes after the final whistle.
highlights_snippet.sent: Last late afternoon weekend kick-off in the Manchester City derby saw 34 fans arrested at Wembley in 2011 FA Cup semi-final .