Our new series on the gangs operating in Dublin portrays a violent world which, in some ways, is a million miles from the one most of us inhabit.
There, human life is cheap. Lethal feuds are sparked over tiny debts and perceived slights and fear is a way of life for many families.
Many people only become aware of what's going on in their city when a violent incident makes the news.
Other innocent people live with the sometimes petty but often vicious consequences of gang wars every day.
Whatever group we're in, we need to know about the ruthless criminality that is causing so much misery in parts of our city.
It is in no one's interest that criminals believe that as long as they keep their violence among themselves they'll get away with it.