It is a commonplace political observation that carelessly passed legislation often has unintended – and maybe ridiculous – effects. Our newly minted local legislators seem to have neglected this important warning. We are all, these days, eager to secure national security. However, attempts to achieve this by jailing those convicted of national security offences for long periods have reached a curious position. Readers will recall that – under the national security law bestowed on us by Beijing – national security offences come, like Pacific Coffee, in three sizes: small, medium and large. Thos…