A police officer from the force overseeing major anti-fracking protests has received "management advice" after labelling activists as "scum" on Twitter.
The comment was picked up by a member of the public, who tweeted, "#balcombe @sussex_police should your officers really be calling protesters 'scum' on twitter? I suggest you issue some guidance ASAP."
The force said in a statement: "Sussex Police has received a report of a personal Twitter account belonging to a Sussex officer, which is abusive to protesters at Balcombe.
"We have worked hard to engage with everyone involved in and affected by the activities surrounding the drilling operation at Balcombe and no matter who authors them, such comments are unhelpful and not acceptable."
The Alzheimer's Society cautiously welcomed Sussex Police's plans to use GPS locating devices to trace dementia patients, but stressed that the tracking system should not replace care.
In some circumstances and when appropriate consent is given, GPS tracking can enable a person with dementia to remain independent for longer, providing them and their carer with peace of mind.
But we must balance the potential advantages to the individual and the protection of a person's civil liberties. Any tracking system must support and never replace good quality care.
Alzheimer's Society understands the safety of people with dementia is an important issue to address and people with dementia and carers have told us that they welcome technology like this if used in the right way.
– Jeremy Hughes, chief executive of the Alzheimer's Society
Hughes added that the society is working with organisations such as the Association of Chief Police Officers and the Missing Persons Bureau to ensure people with dementia feel secure and included in their communities wherever they live.