An Ignoble Experiment: The 7: Trump cranks up his inflammatory rhetoric; your mail could be getting spied on; U.S. Olympic track trials; and more

Good morning. It's Monday, June 24, and we're feeling self-conscious about our sock choices after reading this. Now let's catch up from the weekend.

What happened? More than 15 police officers and several civilians were killed yesterday in what appeared to be a coordinated attack in the republic of Dagestan, officials said.
Who did it? There was no immediate claim of responsibility. But Christian and Jewish religious sites in Dagestan have frequently been targeted by extremists.

On Saturday: Trump claimed at two campaign events that he told Dana White, president of the Ultimate Fighting Championship, that he should start a competition with migrants.
The bigger picture: Trump has been cranking up his inflammatory messages, including against migrants, to help his campaign rake in money ahead of November's election.

What to know: The Biden administration announced a U.S.-backed deal this month, but negotiations have stalled as Israel continues its brutal offensive in southern Gaza.
This weekend: Israeli airstrikes killed dozens of people in Gaza City, in the territory's north. And Israel's defense minister arrived in D.C. for meetings with U.S. officials.

The details: More than 1,400 high temperature records fell last week, including hundreds in the U.S. In Saudi Arabia, 1,301 people were reported dead during the Hajj pilgrimage.
What it means: It's more proof that human-caused warming has raised the baseline of normal temperatures so far that once-unthinkable catastrophes have become commonplace.
In related news: Climate change is already making your bills more expensive, a recent study found.

Inflation-adjusted change for 16-to-24-year-olds, according to Bureau of Labor Statistics data. (The Washington Post)

How? Young adults are spending more on housing and car insurance than millennials did, a new Post analysis shows. They're also more likely to be in debt, despite higher wages.
What it means: Higher credit card and student loan repayments have an immediate cost. And, in the longer term, it will become even more difficult for young people to buy homes.

How? The Postal Service approves thousands of requests every year from police officers and federal agents looking for information on the outside of people's letters, records show.
Is it legal? Yes, a warrant is only needed to open a sealed letter. But lawmakers have criticized the practice, saying it amounts to "warrantless surveillance" of Americans.

Sha'Carri Richardson celebrates her win at the U.S. Olympic track and field trials in Oregon. (Chris Carlson/AP)

What to know: The star sprinter won the 100 meters at the U.S. track and field trials Saturday in 10.71 seconds — three years after her Tokyo Olympics dreams were derailed.
For the men: Noah Lyles, the fastest man in the world, tied his personal best with a time of 9.83 seconds yesterday. He is hoping for gold in the 100 and 200 meters in Paris this summer.