"When you'll get close to the
crucified man in the main room, Brother Kanker will appear. Killing him is not
that hard (1 XP), after you do so, take the brotherhood flyer from the floor
(1 XP). Push the switch to raise the bars and leave the sewers."

This item that's suppoed to be in Downtown isn't showing up (or it's hidden?). Maybe I went down there too soon? I did right after talking to the people at the anarch bar and the homeless guy.

Using the 10.9 patch

Edit:
Apparently there's another person and whoever you take out second drops it, so nevermind I guess.