hillary clinton unveiled an ambitious $4 billion proposal to halve the homicide rate in major american cities. the plan involves adding 100,000 new police officers and targeting gangs, drug markets, and illegal gun trafficking.

you might recognize (all of?) these elements from the 1992 clinton crime bill. this is great news for my teaching, since i can now dust off a killer essay question on the anticipated impact of 100,000 officers on the perceived certainty of apprehension and punishment. i’m also intrigued by the weapons interdiction aspects of the proposal. if you click on the chart above, you’ll see how gun homicide rates have fluctuated wildly relative to non-gun rates over the past three decades.