Let's not forget that someone reported him
So thank you to whoever did that, probably brainwashed into thinking that anyone taking photos of anything is definitely a terrorist. (As is, naturally, anyone who has more than one mobile phone, or who has odd-looking stuff in their bin.)
I do like the idea of a national 'photograph a copper' day. We'd better have the backup of people to photograph the people photographing the copppers, just in case the photos are taken in an 'intimidating' manner.