A recent study by the Crime Prevention Research Center shows that people with concealed carry licenses are truly the MOST law abiding citizens in the United States. However in every bunch there are bad apples.
While Illinois Concealed Carry Licenses currently (September 14th, 2016) hover around 250,000 people licensed to carry a concealed firearm in Illinois, and revocations are around 250 as of August 2015, that is a rate of less than .001 or 0.1%! Of those 250 revoked, some of the people mentioned on this page have chosen to become revoked in a spectacular manner.
When you have gone through the proper training and when you have paid the proper fees to the government, and when you have receive your permission slip; you have the right to carry a concealed firearm. While the laws of different states certainly will vary, no state that I am aware of gives you the right to be a jackass with your concealed carry license.