Another tourist has disappeared while visiting London with his family. 70-year-old Salem Handoon from Saudi Arabia took a black cab from Borough to Bishopsgate on Monday afternoon.
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The first Blue Moon since 2012 will appear over the UK on Friday. The next won't be until 2018.
Other hate crimes against muslims and gay people have also risen.
Archie's mum was fed up with the balloon floating around her living room so suggested he let it go to see how far it could travel.