I refuse to engage in most of the speculation that goes on around this tragedy exactly because it is so distasteful...but I would never tell someone else to curtail their right to free speech. Freedom of speech is far too important to our society. If you think someone's conspiracy theory is retarded, then just use your free speech to tell them it's retarded, and explain to them why. If your on the side of truth then at the end of the day, reason will prevail.