Never followed Bolger in detail. This is whats comming my way out of Providence and Westerly
Read this about the principle of “Omerta”: https://en.wikipedia.org/wiki/Omert%C3%A0
Here is a story about the guy who almost certainly killed Bulger: https://usa.greekreporter.com/2018/11/02/the-greek-american-mafia-hitman-suspected-in-gangsters-murder/
According to the reports, the guy who killed Bulger is an incarcated Mafia hitman (who was not formally made a member of the mob because he and his Mafia brother were Greeks, not Italians). Bulger violated Omerta. The moment he was put into a prison population with other Mafia members his days became numbered. Word is that this stone killer also had a particular HATE for “snitches”.
He just demonstrated his loyalty and honor to the mob by disposing of Bulger.