I spent Nyepi, the Hindu day of silence, in Bali. Things have quietened down a bit here, but earlier in the month prisoners in Kerobokan, the main jail, went on the rampage. Officially the riot was about overcrowding, though the trigger seems to have been some spat about drug dealing. It is old news that drugs are cheaper inside Indonesia’s jails than outside. But it is the link between drugs and overcrowding in jails that we need to be thinking…