There are currently some groups in the US who are directly being subject to police state methods under the "war on terror". I don't think that these draconian methods against targeted domestic groups are being forgotten as he does. They, like the endless US military campaigns abroad, are also being regarded by the "good Germans" of the US as merely the "new normal".
Today you’ll hear the annual chorus of “we will never forget.” But we have forgotten. We have forgotten the uproar against the Patriot Act, which was passed in the middle of the night. We have forgotten that Guantanamo Bay was once treated as an aberration, which Obama promised to close. And we have forgotten what freedoms have been sacrificed in the name of an ever-growing threat.