Former homeland security adviser Fran Townsend says we need new methods of addressing gun violence.

Also: we learn how the gun lobby brought gun violence research to a halt in one US agency; a constitutional scholar puts America’s right to bear arms in a global context; Russian bots seize on the Parkland shooting to amplify divisions; gun rights supporters say Israel could serve as a model for the US but some Israelis disagree; and what does a year of mass shootings sound like ... in piano notes? Listen here.

(Image: Marjory Stoneman Douglas High School student Emma Gonzalez speaks at a rally for gun control at the Broward County Federal Courthouse in Fort Lauderdale, Florida on February 17, 2018. Credit: Rhona Wise/Getty Images)