On the same day London is attacked, Turkey says that Europe 'will not walk safely on the streets': http://www.independent.co.uk/news/world/europe/turkey-erdoga...
Erdogan is working hard to undo approximately 80 years of Turkish progress. He may succeed in Turkey, but I highly doubt he will succeed to destabilize the rest of Europe or to make good on his threats of using Turkish citizens that have moved abroad as some kind of fifth column. He's mostly playing to a local audience with statements like that and likes to depict himself as the strong man in a struggle that is mostly initiated by Erdogan himself.
I feel pretty safe on the streets here. Much safer than I would feel in Ankara or Istanbul, and much safer than plenty of Turks feel in their own country.
Please imagine 70million people saying something.