A non sequitur.

'A legal trade body has backed calls for an increase in the age of criminal responsibility after two 11-year-old boys were sentenced for trying to rape an eight-year-old girl.
The Law Society, which represents solicitors in England and Wales, said the move was needed to help reduce the chance of young offenders becoming serial offenders.' Aol News.

A non sequitur is when a conclusion is reached which does not follow on from, or is not justified by, the original point.

Please read the first part of the above; then the second before applying the test!