If laws also apply to little children (below the age of 10 or 14), could this be the reason why babysitters or nannies were hired?

If little children (especially toddlers or preteens) were to dress as superheroes to fight crime out of boredom (like for example) & their parents can get arrested for whatever crimes their children has committed, could this be the reason why babysitters or nannies were hired when parents were away?
Update: Like for example: there will be a given list of movies that younger kids shouldn't watch.
Update 2: Say if kids wanted to play "superhero".
Update 3: If kids were to commit crimes like vigilantism.
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