What is the greatest threat to human freedom?
The need to be free is something many are enslaved to. This isn't just a 'for the sake of sounding wise' statements. You will find that the most violent Tyrants, even Genghis Khan, preached to their allies of seeking freedom and a utopia where they can do as they please, how they please when they please. It's who that freedom comes at the sake of that tends to be ignored in such speeches.
That freedom is invoked by tyrants in this way does not suggest that many people are enslaved to a need to be free. It means that freedom as an abstract and poorly understood concept can be invoked as a post hoc rationalization or justification for behaviors that otherwise might be hard to pass off to people. This doesn't implicate freedom. It implicates herd mentality, a disposition towards otherization, passive indifference, and willful ignorance.