Research6

The meaning of the guilty: guilty adj. having been convicted of a crime or having admitted the commission of a crime by pleading "guilty" (saying you did it). A defendant may also be found guilty by a judge after a plea of "no contest," or in Latin "nolo contendere." The term "guilty" is also sometimes applied to persons against whom a judgment has been found in a lawsuit for a civil wrong, such as negligence or some intentional act like assault or fraud, but that is a confusing misuse of the word since it should only apply to a criminal charge.
 http://legal-dictionary.thefreedictionary.com/guilty

Criminals feel the guilt and shame:
1.Within three years of being released from jail, two out of every three inmates in the US wind up behind bars again -- a problem that contributes to the highest incarceration rate of any country in the world. New research suggests that the degree to which inmates' express guilt or shame may provide an indicator of how likely they are to re-offend.http://www.sciencedaily.com/releases/2014/02/140211103334.htm

2.
To better understand the psychological experience of interrogation subjects, a recent experiment was designed to simulate a police interrogation and resulted in 81% of the subjects designated as “innocent” waiving their right to silence while only 36% of those designated “guilty” did the same (Kassin, 2008). This is very similar to the numbers waiving their rights in actual custody situations, and comports with the general impression that “if you have nothing to hide you have no reason to insist on legal counsel”. Kassin, a leading researcher in the false confessions area, refers to this as the innocence-confession paradox–wherein the Miranda warning does not protect those most in need of protection–the innocent.
Innocent people think, since they did nothing wrong, that cooperating with the interrogators will simply expose their innocence. Instead, waiving their right to silence exposes them to the risk of false confession. Those who have a criminal past are much less likely to waive their right to silence (Sangero & Halpern, 2011).
http://www.thejuryexpert.com/2012/11/only-the-guilty-would-confess-to-crimes%E2%80%A8-understanding-the-mystery-of-false-confessions/

Many famous crimes become the dramas and the movies: 1.Criminal minds     2.Mentalist

Until now, the criminal rates are still large part in the world.:While infrequent by U.S. standards, street crimes do occur. With some variation, police statistics have remained largely stable the past few years, and while a small increase in reports of certain violent crimes has been reported, there have been few incidents involving Embassy, U.S. military, or expatriate victims. There were a handful of high-profile violent and sexual crimes
https://www.osac.gov/pages/ContentReportDetails.aspx?cid=14004

The number of violent crimes in our country is now at least double the number in the United States and 12 times the number in Japan, a study has found.
http://asiancorrespondent.com/85740/skorean-violent-crime-rate-exceeds-united-states/

The meaning of the crime:
it's a crime
spokensaid when you think something is very wrong, and someone should not do it
http://www.ldoceonline.com/dictionary/crime 

People's prejudice:•         2. Criminals think and act differently than other people, even from a very young age.
http://www.historylearningsite.co.uk/why_do_people_commit_crime.htm

Criminals also feel the guilt: 

Siegmund Freud had his own views on what makes a criminal. Freud proposed that much deviance resulted from an excessive sense of guilt as a result of an overdeveloped superego.  Persons with overdeveloped superegos feel guilty for no reason and wish to be punished in order to relieve this guilt they are feeling and committing crimes is a method of obtaining such desired punishment and relieving guilt.  In effect, a person commits the crime so that they can get punished and thus relieve guilt – the guilt comes before the crime. According to this view, crime is not the result of a criminal personality, but of a poorly integrated psyche

http://www.historylearningsite.co.uk/why_do_people_commit_crime.htm