WAMC's Dr. Alan Chartock discusses President Trump's plan to have tanks on display at Thursday's Fourth of July celebration in Washington, D.C.
He also comments on reports of squalid conditions at border detention facilities in Texas, and a secret Facebook group where Border Patrol agents have been accused of joking about migrants' deaths and making sexist remarks.
Also in the headlines: a new CNN poll says U.S. Senators Kamala Harris and Elizabeth Warren are narrowing Vice President Joe Biden's lead in the 2020 Democratic primary.