Child-on-parent violence is a taboo subject and one that is hardly researched in the UK. We speak to Lesley, a mother who lives with daily violence from her eldest son. It has devastated family life and exposed gaps in a system not set up to deal with the problem. Plus: Emma Graham-Harrison on the Nobel peace prize winners Denis Mukwege and Nadia Murad, who receive their awards today. To support The Guardian’s independent journalism, visit theguardian.com/todayinfocus/support