UK police surveillance of political demonstrations

From The Guardian:

Photographs, names and video footage of people attending protests are routinely obtained by surveillance units and stored on an “intelligence system”. The Metropolitan police, which has pioneered surveillance at demonstrations and advises other forces on the tactic, stores details of protesters on Crimint, the general database used daily by all police staff to catalogue criminal intelligence. It lists campaigners by name, allowing police to search which demonstrations or political meetings individuals have attended.

Great.