Governments (ab)use their authority to treat awkward knowledge as a matter of state secrets, and criminalise those who are brave enough to believe that the citizenry needs to know the crimes that their government is committing with their trust and their tax dollars. The arguments swirling around the 9/11 attacks are emblematic of these issues. What fuels suspicions of conspiracy is the reluctance to address the sort of awkward gaps and contradictions in the official explanations that [WantToKnow team member] David Ray Griffin (and other devoted scholars of high integrity) have been documenting in book after book ever since his authoritative The New Pearl Harbor in 2004 (updated in 2008). This brings me to the Arizona shootings. The most insistent immediate responses have come from the opposite ends of the political spectrum, both proceeding on presuppositions rather than awaiting evidence. If we want to be responsible in our assessments, we must restrain our political predispositions, and obtain the evidence. Let us remember that what seems most disturbing about the 9/11 controversy is the widespread aversion of government and media to the evidence that suggests, at the very least, the need for an independent investigation that proceeds with no holds barred.