@AOG
Apologies for the delayed reply (tech troubles).
//Well since some chosen to pooh-pooh YMB's 'pedophile' example, //
We have Sarah's law, which would be incompatible with anonymity. I'm not sure if the USA has an equivalent law but the same contradiction would apply. Reductio ad absurdum is a debating tactic I use myself, so I hesitate to criticise its use here. It's just that it helps when there are more matching features and fewer contrasts eg crimes committed in search of fame/notoriety versus crimes kept secret, so as to ensure possibility of repetition.
//what about terrorists, should we not see their faces also, perhaps you agree with the Niqab being worn in a court of law? //
We had a long debate about that, which I reckon you started. If you can relocate it, you will find my views on that matter in there.
//Or perhaps we should go the whole hog and do away with 'mug-shots'? //
They are for the police's benefit - how could they function without them. The public only needs to know what some scr*te looks like if they've escaped and are a known danger to the public.
As things stand, so many mugshots have been put on the front covers of newspapers (I rarely buy them) that I can't remember 99% of them, yet the generic sense of "mean/ugly mug = violent/perverted crim". But perhaps that's the whole idea. To suggest that physical appearance and tendency to criminality go together.
An idea which emerged in the 19th century, I think you'll find. Victorian criminals were getting their mugshots taken, in the name of "scientific research" at a time when a photographic family portrait was still pricey enough that only the reasonably well-off had them done (although not as much snob value as an oil painting, I suspect).