People in Britain have long been able to march in protest - but those voices are being silenced in parts of London - for an entire month. The government's letting police slap a blanket ban on public gatherings in the capital. For some it's putting freedom of expression under threat, as Laura Emmett reports.<br /><br />RT on Twitter: http://twitter.com/RT_com <br />RT on Facebook: http://www.facebook.com/RTnews
