[quote=Mussolini14][quote=BarrettM]
There's a theory that Sam's inner circle started getting killed off before they went after Sam. The big basis for this is that Richard Cain, Giancana's courier, was killed a year before. It's something to look in to.
From what I have read, this seems to be a general theory and seems to be backed up by a few people. Makes sense.
From what I have read, everything in Chicago is crew based. So who has the most powerful crew/strongest power base is boss. So when you lose your crew, you lose your power. So when Giancana's guys all were killed, his power base was gone, and therefor he could be taken out.
Also, it seems, that lots of bosses had soldiers who were direct with them instead of staying with the crew which also added to a bosses power.
