It was here, on this corner, on a Friday in the fall of 2013, that Thadeaus received confirmation of something he had long suspected: He was being watched — closely — by the NYPD. The police knew the names of all of the organizations to which he belonged, and had informants inside at least one of them. They knew he would sometimes moonlight as a DJ and dutifully noted which parties he attended, which events he played.
He learned from a New York Times journalist that he was under surveillance. The NYPD, he was told, suspected Thadeaus may have been "the bicycle bomber" — a shadowy figure responsible for detonating a makeshift grenade outside a military recruiting center in the middle of Times Square in 2008. Their evidence was thin: They knew he sometimes hung out with other bicycling enthusiasts and activists, and that he was, at one time, the administrator of an anarchist blog that posted a news article about the Times Square bombing several hours after it occurred. . . . Shortly after filing their complaint, a few of the activists involved went out to a café with a retired FBI agent, a man who had gone undercover with right-wing militias during his time with the bureau. They asked him, as someone who had infiltrated and surveilled groups, how they might prevent it from happening to them, or at least identify the informants in their midst.
His advice? Don't even try.
The NYPD and the FBI, he told them, "have endless resources to create covers for themselves. You should just keep doing the work that you're doing, and don't try to get to the bottom of it, because it will waste your time, it will be a distraction, and it will destroy your organizations."