Bandits in Sicily are nothing new, and neither are honor killings.
The problem here is the Wikipedia "source" is not fully informed.
Until 1999, I worked for Miami CSI. (Metro-Dade P.D.)
We investigated immigrant "Honor Killings" up until about 1985 when they tapered off.
Until about 1995, there used to be no punishment for the perpetrators of "Honor Killings" in Brazil.