The Omdurman prison where Mrs Gibbon will be locked up was built for 200, but now houses 1,200 women and 300 children, most of the adults jailed for illegally brewing alcohol.
Spare a moment to think not only of Gillian Gibbons, whose story we know, but of those 1,500 others, especially those children.
ADDED: More here:
The protesters streamed out of mosques after Friday sermons, as pickup trucks with loudspeakers blared messages against Gillian Gibbons, the teacher who was sentenced Thursday to 15 days in prison and deportation.
They massed in central Martyrs Square, outside the presidential palace, where hundreds of riot police were deployed, although they did not attempt to stop the rally.
"Shame, shame on the U.K.," protesters chanted.
They called for Gibbons' execution, saying, "No tolerance: Execution," and "Kill her, kill her by firing squad."