If you want to help with the Boston Marathon bombing investigation, instead of speculating about something that is not going to help it ... you might try the following, copied from the page ...
Geert Wilders IFA Friends
GWIFA: Links that the FBI wants you to see ...
We’ll also note here that the FBI says that THESE PHOTOS (that come from the FBI itself) are the ONLY ONES the public should look at. Any other photos on the Internet will not help the FBI. They are EMPHATIC about that!
Speculating? I’m asking questions about identically dressed guys with identical backpacks.
Who are they? Why are they there? What are they doing? Who sent them? etc.
Are they undercover BPD? Undercover some federal agency? Completely plausible. Maybe they are there to monitor. It is a large crowd, maybe DHS was monitoring.
Maybe there was intelligence and extra precautions were taken.
Why the large packs?
Clearly these guys are together. They definitely are not civilian.
The FBI is emphatic. The fact that these guys are here and quite clearly the FBI is pretending they don’t exist underscores questions about them. Legitimate questions.