This is a special mafia tag that doesn’t give sales. It can be found in normal news items that spawn on the globe. The tag will only spawn when an NPC quest is active. (All NPC factions have their own type.) The quest introduction gives a small hint about what category the tag can be found in.

The Mafia Quest “Time to start playing ball” tells about a sports event.

So, in this case, the Mafia tag will be in a sports category news item.