"Be nice to America or we’ll bring democracy to your country” is a popular bumper sticker saying. Dan R. Frazier of CarryABigSticker.com possibly coined the saying, which has been cited in print since 2005—just after the United States entered conflicts in Afghanistan and Iraq.


CarryABigSticker.com
(A May 25, 2005 date is on Google, but not on this page.—ed.)
Be nice to America. Or we’ll bring democracy to your country.
I’m not sure what to say about this one. Uh, it has something to do with Iraq I think ... or maybe Afghanistan. My wife said it’s kind of sad. I think she is right about that. 
Dan R. Frazier

Cross-X.com Forums
Andromeda
Posted 26 November 2005 - 07:04 PM
(...)
Ankur said
just remember. be nice to america, or we’ll bring democracy to your country.

15 December 2005, The Advocate (Baton Rouge, LA), Smiley Anders column:
“Be nice to America or we’ll bring democracy to your country next.”

USA Today
A war with flags but no faces
Posted 8/16/2006 7:54 PM ET
By Jonathan Turley
Dan Frazier seems an unlikely sort to spark a national firestorm. The soft-spoken former journalist runs a left-leaning website in Flagstaff, Ariz., offering political T-shirts and other items with such slogans as “Be Nice to America or We’ll Bring Democracy to Your Country.”

Twitter
Frank Roche‏
@frankroche
My favorite bumper sticker of the day: Be nice to America, or we’ll bring democracy to your country.
4:49 AM - 12 Apr 07

Foreign Policy Journal
Be nice to America. Or we’ll bring democracy to your country!
by William Blum
April 15, 2010
Produced and directed by Charle Mauch and William Blum.