Drugs are the primary reason that arrests are made nationwide. 1.55 million of the 12.2 million arrests (12.7%) in 2012 were for drug crime. According to FBI data, more than 4 in 5 of these arrests (82.2%) were for possession, while fewer than 1 in 5 (17.8%) were for sale or manufacturing. That is one way to look at how much crime is drug-related. Another is to look at the motivations that cause people to commit crimes – which answers the question, “How do drugs cause crime?” The basic answer is that they have enough value to individuals and on the market that people will commit crimes to get them; in fact, 18% of federal prisoners and 17% of state inmates in the US said they broke the law to buy drugs (2004). To be clear, the number of arrests does not tell us what percentage of crime is drug-related because a criminal act may not be detected or punished; specifically, if lawmakers and/or law enforcement agencies prioritize narcotics, that leads to more drug arrests, giving a false sense of its proportion of criminal instances.