Ask Washington University Chancellor Mark Wrighton why the school is embarking on a year-long effort to determine causes and solutions to gun violence, and he has a host of statistics and academic rationales to make his case:
- The cost to the nation of $174 billion each year.
- More than 11,000 U.S. homicides and nearly twice that number of suicides from firearms in 2013.
- Missouri’s ranking of fourth in the nation for killings with guns.
But Wrighton's wife, Risa Zwerling Wrighton, has a far more emotional argument, one that moves her to tears.