Asking questions is fine.
Asking questions when you've already made your conclusions, however, is just a waste of everyone's time.
Ok, so let's start with your conclusion that they were framed. What's your evidence?
Now consider the questions:
Why did they carjack a guy? - it's caught on video.
Why did they shoot that cop?
Why did they shoot at the cops at all? - again caught on video.
Why did the cops find identical pressure cooker bombs in the car? You expect us to believe that the cops just happened across a separate pair of bombers who just happened to use the exact same bomb designs and materials?
Why did the cops find leftover materials from the bombs at the brother's dorm room? Again, you expect us to believe that he was just coincidentally building the same bombs with the same materials but didn't actually use them at the Boston Marathon?
Ok, fine, so let's say the brothers really aren't guilty of the Marathon bombings. That still leaves:
* Carjacking
* Armed robbery
* Killing of a cop
* Shooting a 2nd cop in a shootout
* Resisting arrest
* Participating in a high speed chase
Even as just an accomplice, this collection of crimes easily adds up to a lengthy prison sentence - possibly life without parole.
The recent discovery of "Female DNA" on the bomb remains does not change the existing evidence. Considering that the FBI have said the DNA could have come from a sales clerk at the store that sold any of the materials to the brothers, it's basically meaningless unless they can show that this person was some more involved. At worst, it simply shows that the brothers had additional help in constructing their bombs. It does not change the fact that the evidence strongly implies that the brothers carried the bombs to the marathon, and deployed them. That still means the charges of terrorism are valid.