Why is it dangerous to wear a kippah in public?

It is dangerous to determine publicly as Jewish in Germany, including wearing a kippah or yalmulka, Germany’s commissioner warned.

In an interview, Felix Klein told the Berliner Morgenpost on May 24 that he could not endorse that Jews wear a kippah everywhere and any time in Germany. Klein said servants that are public should be more educated on how to combat anti-Semitism in Germany.

Recent government statistics showed a 20 percent rise in the number of anti-Semitic crimes reported within the past year, with an overall total of about 1,800 in the year of 2018. The vast majority of crimes for which a perpetrator or motive is well known were related to the far-right wing.

When looking at the controversial interview published in newspapers of the Funke Media Group, Klein – appointed to his position into the Interior Ministry just last year – was inquired about the security of wearing the traditional Jewish head covering.
Reference
Dangerous to wear a kippah in public, Germany’s anti …. https://www.jta.org/2019/05/26/global/dangerous-to-wear-a-kippah-in-public-germanys-anti-semitism-czar-says