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User blog comment:Master Sima Yi/Assassinews 04-06-'12 — E3 hub/@comment-78.146.203.216-20120608185516/@comment-5503561-20120608193955
I'll just copypaste my post from below, because some people are too thick to scroll down, apparently.
Every guard faction is against you. Always. Saracens, Crusaders, Medici, Pazzi, Forli, Venetian, Savonarola's, Borgia, Ottomans and Byzantines. Just because you are buddies with their higher-up (Lorenzo, Caterina, Suleiman) doesn't mean they won't clobber you given the chance. You won't be able to avoid killing the blue coats at some point of the game, even if just in free-roam, it's essential part of the game.