Out of 300 million people
there are not many,
  ...but it only takes a few
rogue citizens to cause a
lot of damage.

• Benedict Arnold
• Julius and Ethel Rosenberg
• Timothy McVeigh
• Major Nidan Hasan
• Pfc. Bradley Manning
• Dzhokhar Tsarnaev
• Edward Snowden
• Aaron Alexis
• Syed Rizwan Farook
• . . .