A star-studded lineup of progressives are working to reframe gun violence as a national security issue.

Why you're reading this: In a letter obtained by Axios, the group National Security Action — whose signatories include Eric Holder, Michele Flournoy, Jake Sullivan, Samantha Power, Michael McFaul, Ben Rhodes and Susan Rice — says existing threats are magnified because of easy access to guns, noting ISIS boasts about the ease of acquisition for AR-15s and al-Qaeda tells people to use the "gun show loophole." 

Read the full letter below:

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Case growth outpacing testing in coronavirus hotspots

Data: The COVID Tracking Project. Note: Vermont and Hawaii were not included because they have fewer than 20 cases per day. Chart: Andrew Witherspoon/Axios

The United States' alarming rise in coronavirus cases isn't due to increased testing — particularly not where cases have grown fastest over the last month.

Why it matters: The U.S. doesn't yet know what it looks like when a pandemic rages on relatively unchecked after the health system has become overwhelmed. It may be about to find out.

The impending retail apocalypse

Illustration: Eniola Odetunde/Axios

Because of the coronavirus and people's buying habits moving online, retail stores are closing everywhere — often for good.

Why it matters: Malls are going belly up. Familiar names like J.C. Penney, Neiman Marcus and J. Crew have filed for bankruptcy. Increasingly, Americans' shopping choices will boil down to a handful of internet Everything Stores and survival-of-the-fittest national chains.

Biden campaign using Instagram to mobilize celebrity supporters

Collins appears on the Build live interview series in November 2019. Photo: Gary Gershoff/Getty Images

The Biden campaign is launching a new initiative today that will draft Hollywood celebrities for Instagram Live chats with campaign officials and other Biden supporters.

Why it matters: The campaign, called #TeamJoeTalks, is an attempt to open up a new front on social media, drawing on celebrities’ Instagram followers to help find and motivate voters while large parts of the country remain locked down.