Proletarian Reprisals have not been involved in an attack since October of 2002 and is presumed inactive.  It seems likely that they formed for the purpose of attacking Ms. Bakoyianni's office, and that they ceased to exist afterwards.   It is very common for Greek terrorist organizations to attack once and then disappear.

Revolutionary Organization 17 November (RO-N17) -- Supported Cause
Revolutionary People's Struggle -- Supported Cause

Proletarian Resistance is a small arsonist group responsible for lighting two cars with American license plates on fire.  Proletarian Resistance is but one of many arsonist groups that operate in Greece.  It is impossible to determine whether the hundreds of arsonist incidents which occur in Greece every year are the work of numerous independent groups or whether they are the work of a few groups which constantly adopt new monikers.  These groups tend to be comprised of young men between the ages of 18-25 whose activities are either anarchist or devoid of serious political aims. <p>Proletarian Resistance has issued statements in support of the members of 17 November who are standing trial as well as detained members of ELA and Iraqi insurgent groups.  The group's attacks on cars with American license plates is likely retaliation for America's involvement in helping Greek authorities capture members of 17 November.<br />

If Proletarian Resistance is indeed an organization separate from other arsonist groups and is stlil active, it is highly unlikely that its activities will expand beyond small arsonist attacks.

Proletarian Solidarity took responsibility for an arson attack at the offices of the European Union Funds Management Unit in Athens.  The group used gas canisters and inflicted minimal damage.  Proletarian Solidarity is but one of over 100 small arsonist groups in Greece that has used gas canister attacks as a means of voicing discontent with Greek policies.  The motivation for such attacks tends to be the detention of seven men in Thessaloniki who disrupted an EU summit or the trial of members of the 17 November group.  Police do not know if all of these groups are related as it is possible that different names are used by the same people on different occasions.