Ill also have to agree with BAM about the another person being killed. That one person should be punished as if he killed the person. So then those people are not part of the community anymore.

After awhile people may get the message, and even then there will always be stupid people. Alot of people raise extremely aggressive dogs and promote this behavior. These dogs can be dangerous, just like any other animal. Though I do not think anyone should control the dogs we keep either.