If you belong to any sort of organization which exists to challenge government power to engage in any sort of violence — be it war, the death penalty, or any related matter — you need to seriously consider the possibility that some government agency has worked to monitor and even infiltrate the group. You may not think that your group is large enough to attract such attention, but if you have held public protests that's probably been enough when it comes to people who don't like having their power challenged.
It doesn't matter if you have ever engaged in or even just advocated violence or not. It doesn't seem to matter if your group is explicitly pacifist in nature. The Homeland Security and Intelligence Division of the Maryland state police have, according to documents uncovered by the ACLU, used covert agents to monitor and even infiltrate the Baltimore Pledge of Resistance, a peace group with no ties to violent actions of any sort. They also monitored and infiltrated anti-death penalty groups, never known for violent actions or rhetoric.
All that seems to matter is whether someone in some government agency can claim to have "probable cause" to investigate the group, and it's never been hard for police agencies to justify such a low standard when they are challenged. Tips from anonymous witnesses, no matter how little credibility they have, have been used by anti-drug units to charge into homes and even kill completely innocent people — with little or no repercussion to the police themselves. There's no reason to think that similar "evidence" will not be enough for government officials who want to infiltrate peace and anti-death penalty groups.
http://patriotboy.blogspot.com/2008/07/americas-police-state-did-ya-ever-get.html