Oh sweet, sweet irony. You really can't make these things up.

Police Officers Sue Over Police Surveillance of Their Protests - New York Times:

"The demonstrators arrived angry, departed furious. The police had herded them into pens. Stopped them from handing out fliers. Threatened them with arrest for standing on public sidewalks. Made notes on which politicians they cheered and which ones they razzed.

Meanwhile, officers from a special unit videotaped their faces, evoking for one demonstrator the unblinking eye of George Orwell's '1984.'

'That's Big Brother watching you,' the demonstrator, Walter Liddy, said in a deposition.

Mr. Liddy's complaint about police tactics, while hardly novel from a big-city protester, stands out because of his job: He is a New York City police officer. The rallies he attended were organized in the summer of 2004 by his union, the Patrolmen's Benevolent Association, to protest the pace of contract talks with the city."