Snapping over a special branch

Pete Bibby wants to know whether the Guardian has a list of which groups can be acceptably stereotyped. Photograph: Matt Dunham/AP

That’s clear then (Report, 26 March). Senior Metropolitan police officers were happy for their resources to be spent on investigating MPs who were campaigning within the law on issues like nuclear disarmament and minority rights but not on investigating an MP who was seemingly abusing children.
Graham Walsh
Cleckheaton, West Yorkshire

• Ah, those were the days, when Labour MPs were radical enough to merit the attention of special branch.
Caroline Westgate
Hexham, Northumberland

• Angry men, middle-aged dinosaurs (Gaby Hinsliff, 27 March). Does the Guardian style guide have a list of which groups can be acceptably stereotyped?
Pete Bibby
Sheffield