Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets.
If you drop a bunch of magnets, they might break. Nevertheless, even if they do break, you can still use them. Their magnetic property isn’t lost, but their form will never be the same.
If you damage the relationships between a group of people, their bond isn’t necessarily lost, but the form will never be the same.