Here is the logic:

• Murder is already a crime. It didn’t stop the criminals to kill children.

• Let’s make it a crime to carry a knife. Let’s make it a crime to hide it in the backpack.

Of course, the criminals will obey, won’t they? … same as the law NOT to murder.

How can people fall into this emotional trap?

It looks to me, more and more, like a Problem - Reaction - Solution.

Something big is coming and they’re afraid of the people.