I don't think you can ever justify violence, unless your own or someone else's life depends on it.
You mention a thrown remote. It is up to you if you want to destroy your own property, but if you throw the remote at him/her, it has the potential to cause pain, or worse; I would say no.
With the latter two, while slapping someone might be fine when both parties agree to it, be it for whatever reason, I don't see a reason to slap anyone with the purpose of violence.
As for beating someone to death, no. You are going too far, no matter what that person has done.