The animal rights cult Direct Action Everywhere reveals a guide to its investigative tactics disclosing everything from spy cams to night vision and drones.

In recent years, the animal liberation group Direct Action Everywhere has carried out some of the most brazen and tech-savvy operations and investigations to ever target the animal agriculture industry. It has rescued pigs, goats, ducks, and chickens from factory farms and slaughterhouses in midnight intrusions; captured virtual reality footage with custom-built 360-degree video rigs inside massive pig barns; and used hidden cameras to record some of the meat industry’s most disturbing practices, from the carbon dioxide gas chambers that are increasingly used in pig slaughterhouses to the “ventilation shutdowns” designed to cull thousands of farm animals through overheating and suffocation.

To pull off all those revelatory and often highly controversial actions, Direct Action Everywhere (which uses the abbreviation DxE) has also spent years evolving its toolkit and operational rigor—from communications security and physical stealth, to penetration tactics for getting inside factory farms and slaughterhouses. It has also long maintained a manual of its own methods for those operations. Now, for the first time, it’s publicly releasing that guide.

The document is a rare glimpse into the detailed tech and tactics of a group that carries out sophisticated and often illegal acts of intrusion and espionage, turning a playbook that might otherwise be used by spies or thieves into one for grassroots activism. “To spend so much time thinking about the vulnerabilities in these facilities, how to get in, avenues of approach,” says Lewis Bernier, a longtime investigator at DxE who has led or participated in hundreds of operations inside farms and slaughterhouses around the country, “I think it’s really changed the way I see security as a whole.”

I do not condone illegal acts of animal mistreatment, especially when it comes to using them for food. However, DxE’s investigation results could also lack nuance as well. However, this manual is very revealing since it discloses how DxE conducts their investigations and potentially how and why they trespass.

Now, imagine the methods outlined in DxE’s manual being used to investigate vote fraud or leftist terrorist groups like them. That would be something to use DxE’s methods for good purposes rather than advancing evil.