Madison Police Chief Mike Koval endorsed the legalization of marijuana last week, saying the drug should be regulated and taxed, with revenues used to fund treatment programs for harder drugs. The comments came during an interview with the State Journal Wednesday about data showing African-Americans in Madison were arrested or cited for marijuana offenses at about 12 times the rate of whites in the city. Koval called efforts to enforce laws against marijuana an “abject failure,” and said the same about the broader war on drugs. “We’ve done such an abysmal job using marijuana as a centerpiece of drug enforcement,...