This seems to be happening about once a week.
Why the hell can't somebody foresee something like this?
When a husband and wife are separating, anybody who suspects their spouse might be capable of violence needs to protect themselves and the kids at a safe location, and the state MUST NOT require that spouse to make their location known... (There must be other things that people can come up with, but this would be a start...)
Mark W.
About the best preventative measure is to be very careful who you get involved with and marry. And even then, that isn't foolproof.