False.

Crime statistics for 2017 showed the lowest level of crime in Germany in 25 years, according to figures released in May by the federal criminal office.

Although there have been attacks by militants aligned with the Islamic State, as well as high-profile murders and assaults by migrant men, the statistics refute Mr. Trump’s suggestion.

Not only was the overall crime rate down 5.1 percent over the previous year, violent crime (down 2.4 percent) and property theft (an 11.8 percent decrease) both dropped.

So-called street crime was down by 8.6 percent. In cases where a suspect had been identified, crimes committed by non-Germans were down by 2.7 percent, while crimes committed by Germans were down by 2.2 percent.

Fraud (up 1.3 percent), computer fraud (a 2.8 percent increase) and drug offenses (9.2 percent higher) all rose, but the number of illegal border crossings dropped 79.9 percent.