After Colorado's 2003 concealed carry law was enacted, the University of Colorado disarmed their students,
while Colorado State University allowed them to concealed carry.
Since the external factors are reasonably similar, their very different results maintained over 12 years give an eye-opening comparison of their effectiveness.
Colorado State which encouraged concealed carry enjoyed an immediate drop of 48% in violent crime (from 30 in 2002 to 16 in 2003)
. But at the University of Colorado Boulder campus (brown lines), the publicity from the gun ban they claimed would increase safety immediately increased violent crime by 10%
The publicity at Colorado State achieved such a dramatic drop in rape and violent crime because it warned their violent criminals that their prey could be armed. If you're a violent criminal then knowing your prey may have a gun will make you think twice. Your fear of being injured discourages you from attack...
Four years later, the violent crime rate at the gun-free University of Colorado had risen by 21% and rape was up by 24%, while the guns at Colorado State had slashed violent crime by 87% and rape was down by a massive 88%
. (results normalized
per 100,000 students.)
Twelve years later, Colorado State with concealed carry had 9 violent crimes in 2014, down from 30 in 2002. They saw a similar drop in rape. These two universities' very different results demonstrate the immense value of defensive guns in protecting your family, your women and your children from violent criminals.