An European Union flag blows in the wind during a 'Flag Mob' demonstration in Parliament Square in central London on February 20, 2017, part of a national day of action in support of migrants in the UK. 
Under the banner One Day Without Us men, women and children come together for a day of action to stress that they want Britain to remain open and welcoming. A number of businesses closed for the day to make the point that the Britain couldnt manage for even one day without the contribution of migrants. 
 / AFP PHOTO / Justin TALLIS        (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)