But Germans have always carried knives and used them in public, right?

Sheesh. The next thing you know they’ll be restricting clubs, spears and stone axes.
Germany getting tough on knife crime – German Interior Minister Nancy Faeser wants to further restrict the carrying of knives in public, to combat a perceived rise in knife crime. But some have criticized the plan as impractical.
The German government has promised tougher knife laws after the police reported a rise in the number of stabbings, especially near train stations — though the statistics remain controversial.
Interior Minister Nancy Faeser has called for the law to be changed so that only blades of 6 centimeters (2.36 inches) would be allowed to be carried in public, rather than the current 12 centimeters. An exception would be made for household knives in their original packaging. Switchblades would be banned altogether.
Well, Ger-Man is the man with a spear . . .