
Scotland had 115 killings in 2007/8, 58 in 2015/2016 and 61 in 2016/2017. The BBC described the three extra deaths in 2017 as a ‘spike’. A 5% increase in one year cannot of course be seen as a significant indicator of a worsening trend. Most victims were men and most perpetrators were men. Female victims were most often killed by a partner or ex-partner.
http://www.gov.scot/Resource/0052/00525786.pdf
This means that the Scottish rate of 11 per 1 million is slightly below the England and Wales figure of 12 per 1 million. According to Professor McVie of Edinburgh Law School, in 2016, ‘rates of homicide have fallen more sharply in Scotland than in many other countries.’
Interestingly, Professor McVie says:
‘At the global level, the international fall in violence has been linked to a number of factors, including smarter policing practices, increased use of imprisonment, changes in drug markets and reductions in lead in petrol.’
http://www.bbc.co.uk/news/uk-scotland-30398110
Readers might remember that research has shown that exposure to lead during pregnancy reduces the head circumference of infants. In children and adults, it causes headaches, inhibits IQ and can lead to aggressive or dysfunctional behaviour. Lead in petrol has been banned in Scotland since 2000. For more see:
As major global cities like London struggle with pollution, levels in Scotland have dropped by more than 66% since 1990. Has this contributed to falling crime levels too?
A factor rarely mentioned is the strong correlation between homicide rates and inequality:
‘Specifically, there is evidence that income inequality strongly influences rates of violent crime, including homicide.’
See also this diagram:

http://bjp.rcpsych.org/content/199/4/341.1
While inequality remains a problem in Scotland it’s worth considering these achievements of the SNP adminstration:
‘There is much that the Scottish Government is doing to reduce the impact of poverty and inequality and there is much in Scotland that can be celebrated and learned from.’
http://www.rcpch.ac.uk/system/files/protected/page/SOCH-recommendations-Scotland.pdf
‘New experimental statistics have been published today showing the proportion of people living in persistent poverty in Scotland between 2010 and 2015. We know that spending brief periods with a low income can be less damaging than living in poverty over a number of years. The persistent poverty figures show the number of individuals living in poverty for 3 or more of the last 4 years. Scotland generally had lower persistent poverty rates when compared with England, Northern Ireland and Wales, especially after housing costs. After housing costs the the Scottish persistent poverty rate (9 per cent) was below that of England (12 per cent), Northern Ireland (12 per cent) and Wales (12 per cent).’
http://news.gov.scot/news/persistent-poverty-in-scotland-2010-2015