Photo: Robyn Beck/AFP/Getty Images

MSNBC is partnering with March for Our Lives and a nonprofit founded by former Rep. Gabrielle Giffords, who survived a 2011 shooting, to host a gun safety forum featuring 10 2020 Democrats on Oct. 2.

Why it matters: Activism around gun violence has been more sustained than usual since mass shootings in El Paso and Dayton last month, per Axios' Neal Rothschild. Immigration, which had been the top issue in terms of social media interactions throughout much of 2019, is now in second place behind guns.

  • Nearly 40,000 people in the U.S. died from gun wounds in 2017 according to data from the CDC.

Details: The forum will be held in Las Vegas one day after the two-year anniversary of the deadliest mass shooting in U.S. history.

The participants: The event will feature a lineup identical to the third Democratic debate, including ...

  • Joe Biden
  • Cory Booker
  • Pete Buttigieg
  • Julián Castro
  • Kamala Harris
  • Amy Klobuchar
  • Beto O'Rourke
  • Bernie Sanders
  • Elizabeth Warren
  • Andrew Yang

Go deeper: March for Our Lives launches gun control plan to spur 2020 youth vote

Go deeper

Updated 50 mins ago - Politics & Policy

Supreme Court clears way for first federal execution since 2003

Lethal injection facility in San Quentin, California. Photo: California Department of Corrections and Rehabilitation via Getty Images

The Supreme Court ruled early Tuesday that federal executions can resume, reversing a lower court decision and paving the way for the first lethal injection since 2003 to take place at a federal prison in Indiana, AP reports.

The big picture: A lower court had delayed the execution, saying inmates had provided evidence the government's plan to carry out executions using lethal injections "poses an unconstitutionally significant risk of serious pain."

2 hours ago - Health

More Republicans say they're wearing masks

Data: Axios/Ipsos poll; Chart: Andrew Witherspoon/Axios

Nearly two-thirds of Americans — and a noticeably increasing number of Republicans — say they’re wearing a face mask whenever they leave the house, according to the latest installment of the Axios-Ipsos Coronavirus Index.

Why it matters: A weakening partisan divide over masks, and a broad-based increase in the number of people wearing them, would be a welcome development as most of the country tries to beat back a rapidly growing outbreak.

Buildings are getting tested for coronavirus, too

Illustration: Eniola Odetunde/Axios

Testing buildings — not just people — could be an important way to stop the spread of the coronavirus.

Why it matters: People won't feel safe returning to schools, offices, bars and restaurants unless they can be assured they won't be infected by coronavirus particles lingering in the air — or being pumped through the buildings' air ducts. One day, even office furniture lined with plants could be used to clean air in cubicles.