This appears to raise a question I'd asked a number of times (maybe even here): Has a court order of protection ever stopped a guy from harming his wife?
Probably. Unless you think that the number of murdered wives would have been the same if all protection orders had been lifted, which seems highly unlikely.
To be sure, if someone if determined to do it, they'll break the law and do it--but it would surely help deter many who are less angry/psychotic.
The laws against murder, you can say with equal logic, never stopped anybody who was really determined to kill someone.
This raises an interesting point, the number of perpetrators who commit domestic violence that are psychotic is very LOW, compared to thier usual propensity to batter family memebrs when psychotic.
The VAST majority of perpetrators of domestic violence are not mentaly ill, they are 'control freaks' who enjoy hurting people.
Orders of protection are very useful, lets us remeber a very important thing about domestic violence, it is systemic on the part of the perpetrator, it involves controlling every espect of the victims life, it is generaly secret and private and the perpetrator does it BECAUSE THEY CAN, most perps are not 'criminal' in the usual sense of the word, they are very concerned about appearances and thier ability to convince people that they are perfectly normal, they depend on keeping up an appearance of normailty to maintain control of thier victims.
Therefore an order of protection can be useful in keeping the perp from physicaly harming the victim.
Now in the five to fiveteen percent where the perp is extremely antisocial , then the order doesn't mean squat, but many victims have found the order to be useful:
1. If the local police respond by making a report and
2. The judge actualy rules that there is a violation.
The best method to help victims would be to just arbitrarily lock up the perps while thier victims sperated from them, but that would violate civil rights big time.