Swastika
Adopted by Adolf Hitler in the 1920s
http://www.pixelcola.net/advg/paper9.pngThe swastika is one of the most primitive symbols known to man since the beginning of time. This symbol as been chosen by many cultures but it was not until Adolf Hitler adopted it in the 1920 that the swastika became a sign that is quick to be associated with fear and hatred.
Example 1:
Pentagram
The Pentagram crossed my mind when I was reading about the swasika because of its relavance to eviil and hatred. The symbol has a negative energy (because it is associated with the devil) similar to the swastika.
Example 2:
President Bush Giving "The Finger"
Giving "the finger" is a gesture that is also associated with a negative response. Bush was also considered by many to be a sort of "Hitler" type man in relation to the war that was initiated while he was in office.