By sdelaney@thekmgroup.co.uk (Sean Delaney) Hundreds of people have staged a demonstration outside Manston detention centre demanding the facility’s closure. It comes after Downing Street said this week it moved more than 1,000 people from the processing centre near Ramsgate, amid reports of a diphtheria outbreak. Today a further demonstration took place to urge the government “shut it down”. Activists from the campaign groups Stand Up to Racism and Freedom from Torture braced the rain this afternoon to protest at the site for a second time in less than a week. People in the umbrella-clad crow…