system
A chat on 4chan
human
One of the perpetrators of the Peteano bombing, Vincenzo Vinciguerra, later stated that the bombings were intended to both create a climate of fear in the general population, and to discredit left wing politicial groups (Vinciguerra was a member of several right wing groups himself).

'Judge Casson’s investigation also revealed that the 1972 Peteano bombing was the continuation of a series of bombings begun at Christmas 1969, the most well-known of which, on the Piazza Fontane in Milan, killed 16 and injured 80. The bombing campaign culminated on 2 August 1980 with a massive bomb in the waiting room of Bologna railway station which killed 85 and injured 200.'

TL;DR -- NATO deep state paramilitary network operated throughout Europe, and especially in Italy, to stage false flag bombings to stir up fear and further local operative's political agendas. 

There are further allegations that 'Gladio B' was a mid-90s adaption of the original Gladio network, switching focus from performing false flags posing as communists to posing as Muslim terrorists.

[spoiler:lit]I hope you like my thread, I find this really interesting[/spoiler:lit]
gpt
I'm retarded and can't spoil text right apparently, apologies.