In June 1941, Perrikos was a founding member of the "Army of Enslaved Victors" (Στρατιά Σκλαβωμένων Νικητών, SSN), one of the first resistance groups to spring up after Greece was overrun by the Germans in April 1941.
Dissatisfied by the SSN's neutrality on the crucial issue of the post-war regime in Greece (monarchy or republic), Perrikos and a number of others split off to form the "Panhellenic Union of Fighting Youths" (Πανελλήνιος Ένωσις Αγωνιζόμενων Νέων, PEAN).
PEAN had a leftist political orientation, strongly opposed any return of the monarchy and insisted on active struggle against the occupying forces.
Sabotaging it was a challenging feat as the building also accommodated the headquarters of the German Secret Field Police in Athens and the surrounding area was frequented by locals.
The attack was widely publicized and praised by Allied radio stations, and marked the end of the ESPO and of German attempts to recruit Greeks into the Wehrmacht.