The NPC's most prominent attack was claimed under the alias of the Proletarian Combatant Groups.  After this attack, the attempted bombing of Italian Prime Minister Silvio Berlusconi, Italian authorities believed they had a credible lead on the terrorists due to the identification of the cell phone used to claim the attack.  The perpetrators, however, remain at large, and the Italian anarchist terrorist underground remains violent and dangerous.

Nothing is known about Proletarian Reprisals other than their name and the circumstances of their only known attack.  On October 9, 2002, the group bombed the electoral office of Athens mayoral candidate Dora Bakoyianni.  The group explained that the attack was "a response to the pre-election campaign using public money and the continuation of the imposition of anti-popular politicians and the fascistic institution of the elections, that is staged by the political parties."  The distrust of democracy expressed in this statement is consistent with the ideology of Greece's two most infamous terrorist groups, ELA and N17.  Both of these groups considered elections to be a placebo designed to pacify the Greek people and delay the inevitable communist revolution.<p><p>Proletarian Reprisals did not explain why it chose Ms. Bakoyianni as a target, but there are several possible reasons.  Bakoyianni was running as a candidate for the conservative New Democracy party.  There has been much speculation in the international and Greek press that PASOK (the socialist party that controlled Greek politics until March 2004) is secretly allied with one or more Greek terrorist groups.   Bakoyianni was widely expected to defeat the PASOK candidate (and did), and Proletarian Reprisals may have attacked her out of loyalty to PASOK.  The group may also have intended to express opposition to her conservative ideology.  Bakoyianni is the widow of Pavlos Bakoyianni, a journalist who was gunned down by assassins believed to be members of N17.  Proletarian Reprisals may have targeted her as a show of allegiance to her husband's murderers.  Finally, Bakoyianni was harshly critical of the government's inability to apprehend more of the terrorists that plague Greece.  The attack on her office may have been an attempt to discourage her from cracking down on terrorism.