If you’re a world traveler you ought to know that if you’re in London, you’re probably being watched.

There are around one million surveillance cameras in the city of London. Wherever you go, whatever you do, whichever bus, tram, or underground car you get into, you’re being filmed. Whatever restaurant you enter, or tourist attraction you visit, it’s being recorded.

It’s all because of crime, terrorism, and safety. Rest assured, if someone commits a crime they’re going to be seen. The question is: Will they be caught?

In 2014, there was a sexual predator stalking the London transit system. He was a middle-aged man wearing glasses and a dark coat. He knew he could be filmed, so he hid himself behind an open newspaper to conceal his identity before he would grope whatever woman sat next to him. …