Martin Kaste

President Trump this week promised to "straighten out" gun violence in Chicago. His strategy: Oppose police reform deals that limit cops' ability to challenge and search potential criminals.

The FBI probe into Supreme Court nominee Brett Kavanaugh is not a criminal investigation into a claim of sexual assault. Experienced criminal investigators say their work differs from this probe.

Most Americans first learned about "bump stocks," which speed up the firing rate of semiautomatic rifles, in the aftermath of the Las Vegas massacre. A year later, they're still mostly legal.

According to the FBI's latest Uniform Crime Report, overall crime rates are stable but regional variations are quite large.

Berlin postcard: Tempelhof Field, a former airport that's had many functions in history, from Nazi camp to U.S. base, now hosts modular homes for migrants and fun recreational areas.

Establishing trust with the million-plus recently arrived migrants is a challenge for local police in Germany, whose duties include deporting people ruled ineligible to stay in the country.

One of the stars of German soccer has quit the national team, complaining of racism from both fans and the football association because of his Turkish ancestry.

German Chancellor Angela Merkel gave a wide-ranging press conference today in Berlin with the German and foreign press. On the Trump-Putin summit in Helsinki, she seemed to welcome that the two met.

President Trump has blasted establishment politicians as he travels through Europe. In the "Barbershop," Michel Martin asks NPR correspondents if his populist messaging is affecting European politics.

No German politician wants to be associated with President Trump. But even though Trump's name isn't popular with Germans, some say he's helping to normalize the anti-immigrant arguments of Germany's far-right.

President Trump said Germany is "totally controlled by Russia," because it gets, in his words, "60 to 70 percent of their energy from Russia." Does that square with the facts?

Police are getting better tools for mining data. They're supposed to make law enforcement more surgical, but some say it's a high-tech justification for targeting certain places and people.

A handful of recently-released videos of police using their fists on suspects raises the question, When is it OK for a cop to punch someone? We explain the rules and the pressure to change them.

There's a new push to study the real-life effects of gun laws. "Red Flag" laws lower suicide rates; reductions in homicides are associated with tougher gun permit requirements.

American police have been reluctant to use systems that can scan live video for the faces of "persons of interest." Amazon wants to change that with a cheaper, cloud-based version of the technology.

Washington state legalized recreational pot in 2012, but the black market lives on. Pot grown legally leaks into illegal markets, while networks of illegal producers pretend they're licensed.

Instant facial recognition is ramping up in China and other places, but will U.S. law enforcement follow suit?

The suspected shooter in the Nashville Waffle House attack legally surrendered his guns in a previous incident. Many states seize guns from people who pose a danger. But how did he get them back?

After Stephon Clark's death in Sacramento, many people are wondering whether anything has really changed in the way police use deadly force since Michael Brown was shot and killed in Ferguson, Mo.

Police shootings of black men are once again in the news, with the protests this weekend in Sacramento and the release on Friday of disturbing new videos of the 2016 shooting of Alton Sterling.