Hence the information campaign to make people aware.
Look at cigarettes, they are harmful and therefore have a strong information campaign to inform the public. I highly doubt you'll find anyone today who isn't aware of the dangers of smoking, but just 100 years ago, it was considered classy and largely innocuous. The difference was a big information campaign to counter the tobacco lobby's attempts to spin smoking as somehow healthy.
The government's role should be to make opaque things transparent, not to bad things that could be harmful. At the same time, they can spy on other countries to get an idea of what types of control they can exert, which would help them better inform the public.
But at the end of the day, it's up to the individual what they choose to believe. Liberty is having the freedom to make poor choices, and to live with the consequences. The government's role should be to earn our trust, but they violate it at every opportunity in the name of "security" (NSA, TSA, etc). Yes, a lot of people will ignore it, and that's a part of having liberty.