No, Harry understands the difference between the possession of an inanimate object and an individual acting in a threatening manner. You don't, you conflate the possession of an object with a threat.
Possession alone is not a threat. Ever. Outlawing the possession of an object (any object) is never a logical response to a threat. What the government needs to do instead is treat American citizens as individuals, and only interfere with their freedom to act if it can prove that the person is acting in a manner that constitutes an objective threat.