别的国家我不知道，美国政府是没有这个责任的。不信可以问版主或是昏上。
具体见以下最高法院判例。
DESHANEY v. WINNEBAGO CTY. SOC. SERVS. DEPT., 489 U.S. 189 (1989)
“A State's failure to protect an individual against private violence generally does not constitute a violation of the Due Process Clause, because the Clause imposes no duty on the State to provide members of the general public with adequate protective services. The Clause is phrased as a limitation on the State's power to act, not as a guarantee of certain minimal levels of safety and security; while it forbids the State itself to deprive individuals of life, liberty, and property without due process of law, its language cannot fairly be read to impose an affirmative obligation on the State to ensure that those interests do not come to harm through other means. ”
http://caselaw.lp.findlaw.com/cgi-bin/getcase.pl?court=us&vol=489&invol=189