Police Chief Regan: To prevent other crimes, your police department has prepared five don'ts. DON'T let your children accept rides from strangers, sometimes these are one-way rides leading to death. The amiable stranger may be a killer. DON'T let your children accept presents from strangers. A bag of popcorn or a candy bar is not worth your child's life. DON'T send children on after-dark errands, the night works in behalf of the killer who preys on our young. If you must have something from the store after sundown, get it yourself. DON'T let your child play unattended in wooded places or empty lots. Though your eyes aren't on them, somebody else's may be watching. DON'T let your children become friendly with Pop, that nice old character in your neighborhood. Most of these men are harmless, but there are exceptions. It's up to you to make sure your child isn't the victim of one of these exceptions. And now for one all important do: If you notice any suspicious characters lurking around schools and playgrounds, DO call at once, your police department: Central 5000, the life you save may be your child's life.