Who told you? the FBI? the News? Obama maybe? How do you know who was wrong and who wasnt...from a post on reddit, facebook or twitter? Because I guy stands up and says I'm innocent then we should drop an investigation?
Maybe they are innocent...and maybe they are not. But why not have a real investigation first before it is decided. The guy in the white hat had the right kind of back pack, was standing at the very square foot where the bomb went off and was seen later without his backpack. I think that deserves a few questions, don't you?