Tags are what WordPress calls is keywords. I attach a small number of tags to every post to help people navigate between content with the same keywords. Tags may be people (David Gauke say), organisations (The Howard League, Revolving Doors Agency), themes (women offenders, homelessness) or specific items (heroin, cocaine, ROTL). If you’re looking to research a particular issue, they can be invaluable.
Drugs remains such a politically sensitive issue that an honest review which highlights successes and failures with the same prominence seems very unlikely, irrespective of which political parties are in power. Until we can have an open and honest debate about drugs in this country, it will be difficult for us to have a truly effective drug strategy.