"(FILES) This file photo taken on February 20, 2017 shows protesters wearing German and French flag face masks pose for a photograph 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. EU migrants said on June 23 that far from being ""generous"", Prime Minister Theresa May's offer for their post-Brexit residency was niggardly and left them prey to the whims of British lawmakers. One year ago today on June 23, 2016 Britain voted to leave the European Union. / AFP PHOTO / Justin TALLIS"
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