A little over thirty years ago some "Meathead" types made the mistake of taking their act to Wall Street, NY. They must not have known of construction in the area: a couple hundred hard-hats took keen interest in their activities. When the dust settled, several `hair-heads' were thumped while NY's Finest were . . busy with other things.
The best part of this London thing is that THEY breached security, THEY got their butts kicked and THEY got arrested. I was a "hippie" when I was a kid, I grew up in the sixties, but these idiots are old enough to know better.