From
https://www.bbc.co.uk/news/uk-england-cambridgeshire-65645364, referenced above.
This concerns me.
I can only assume that 'catering' to those people who lack what I suppose might be called a 'normal' perception of risk means a more lenient sentence if they kill someone by their deliberate action. In a very few cases it is abundantly clear that a person is so profoundly 'mentally challenged' that they have little or no perception of risk (to themselves or others) so any and every interaction with others must be appropriately monitored and the individual in question cannot carry responsibility for their actions.
This was clearly not the case here, though.
All of us have different perceptions of risk, too - and it changes throughout our life and changes in circumstance.
What is a 'normal' perception of risk, and who or what defines it? What is 'mentally challenged' in this context?
What a box of worms and slippery slope this could be!