Yes, ofcourse, otherwise we would just be sheep, blindly following the leader wherever he may take you.
About the 7/7 and 9/11 cases, i wont add much to that, i have my own thoughts about it, but authorities, and especially the American authorities have been evolved in quite a lot of conspiricies before (not conspiricy theories, but actual conspiricies) so why shouldn't we be suspicious, i sure as hell don't trust anyone of those high ranked criminals, even Ron Paul is fishy, and that's very sad, we need someone trustworthy, but power and compassion don'tb match together it seems.
Those rich elitist don't give a damn about you, they only think about themselves, so why should anyone trust those kind of people?