The courage to do what is right, no matter what. A belief that your actions represent more than just yourself, the recognition that what you do defines your entire generation. Also, part of the Marine Corps Corps Values. (see Courage and Commitment)
I hold my honor to be of more importance than myself.
With just a flick of the wrist, you go from harmless citizen to vicious, knife-weilding warrior. Same stigmas as a swithblade apply; see dangerous, lethal, scary and gangster. Although no more lethal than any other sharp object (see rock, nail and razor for examples), the media has turned it into something it never was.
Actually Calico is a U.S. weapons manufacturer. The weapon you are thinking of is the model 950 which is made by Calico. It uses a two part roller rocker bolt with a cylinder style magazine sitting on top. It usually holds 50 rounds however a 100 round version is available. Another close cousin to the model 950 is the 960A which is a submachine gun version which fires from a closed bolt position and is approximately twice the 950's length. Both weapons use the same magazine however.
People better stop getting their definitions of Calico from 50cent songs.