Children who exhibit bad behaviour are better of with some proper upbringing and education instead of being marked as 'potential criminal' in some DNA database. Its very dangerous to accuse them of things they have not done yet. Things which also can be done by 'good' people.
The English government is doing some scary things lately. They are looking at the English citizens through their databases, instead of looking at the actual people. They want to control the English people, instead of organizing the country for them. England is very close to becoming a police state.
DNA of young children in database