Alternet reported: „Crime in Denver Decreases After Pot Legalization“ based on a comparison of Jan/Feb 2013 vs. Jan/Feb 2014. Critics say: „This is insufficient“. They aren’t completty wrong, but we can improve validity. I examined the statistics „Aggravated Assault“ and „Theft from Motor Vehicle“ (random choice) from Jan 2012 to 2014 (I used the average of Jan/Feb 2014 due to a lack of separted values). The average values and standard deviations are 210+/-35 and 581+/-80 (period of Jan 2012 – Dec 2013). The averages of Jan/Feb 2014 are 173 and 371. The difference between the average 2012/2013 and Jan/Feb 2014 exceeds one standard deviation. I made the y-axis of the following diagrams fit to the average values and standard deviations: