There’s a documentary about exactly this. It’s called “The Sopranos”

Watch Sopranos and then you can tell me

Based on what i know, they have their own set of morals where they justify these things. And surprisingly, they are very strict about their “laws” and “honour”.

Source: i am from a third world country, was kinda friends with those type of people (or atleast their siblings) during school.

Oh yeah, sure, there’s this common twelve-step program where all the evil guys meet twice a week. They sit around, talk, sip terrible coffee, and nibble on dried-out donuts. They cry and laugh together, share stories, and show each other pictures of their kids and dogs in that safe space.