This is just a scenario. Could the Tsarnaev brothers role been to attract attention to themselves while others planted the bombs? Their role was to ostentatiously wear backpacks to distract attention? Then when they were the subject of mass attention, they panicked? Or that was their role too? They volunteered for this mission as jihadis?
Or perhaps they were told to go to the Marathon wearing backpacks but that is all they knew?
Similar scenarios can be constructed. The public would like to know if we can eliminate this type of scenario.
Dzhokhar Tsarnaev seems determined to take credit and to shake off conspiracy theorist support. This suggests he is hiding something or taking credit for the work of others to be a great jihadi.
It is likely that Dzohkar Tsarnaev deeply hates White Christian America and the people. He didn’t create this hate out of himself by himself. This is something Chechens feel and they hate us and want to harm us in revenge for the IMF funding of the genocide of Chechens in the 1990s by Russia. They see us as using them as a pawn and abandoning them to their fate. They want to make us pay attention to that hurt and feel it ourselves.
They also see us as part of the wider war on Islam and Moslems. This is a war they believe they can win. They want us to feel what they felt, helpless in the face of a greater power, Islam.
But we appear to ignore the danger of Islam as well as the dangers of Russia inside our countries. Russia’s most harmful activities are inside the universities, but the government seems determined to ignore this and bring more Russians and Chinese to make it worse in our universities and the companies that hire them in tech and banking.
This is draft and preliminary. The above is hypotheses and speculation. Comments and corrections welcome. Please restate as questions. All other disclaimers apply.