You've just highlighted why the average American is scared of terrorists but not the NSA: 3000 people did die on 9/11. There is no evidence of the NSA targeting Americans, or nudging/sabotaging/blackmailing them.
The military could easily storm Washington DC, topple the government, execute every Congressman, impose martial law and announce the start of a new regime under the sole authority of the Chairman of the Joint Chiefs of Staff. You'd have to be pretty nuts to worry that's actually going to happen.
Also, referring to people who disagree with you as ignorant isn't generally the best way to change their minds.