Oh, for Heaven's sake!

A school in Edinburgh has a mural in its assembly hall painted back in the 1930s. It is based on the "Alice in Wonderland" story.  It has recently been restored.  In one panel it includes a picture of a golliwog.  A prospective parent spotted this when having a look round the school, and reported it to the police.  The police have logged the matter as a "hate incident".  Words truly fail me.