Take the most far-out, convoluted, and bizarre conspiracy theory you can imagine. It is a childhood game compared to Renaissance Italy.
In Sicily, al-mafia or its predecessor was still a "peoples' protector" organization. On and off, through the period, Sicily and Napoli (the southern half of Rome) were somewhat independent, ruled by Aragon, carved up among local warlords, etc.
In many ways, the combination of chaos, death, plague, great social refinement, learning, art, brutality, gentility, cruelty, and sublime philosophy oddly resemble what one saw in the TV show Xena. Change the names and the clothes, and Xena was surprisingly close to a heroic fiction view of Renaissance Italy.
Yes, it even had swordmasters of reputedly superhuman ability.