Stop before it's too late: Sister of killed Northern Ireland journalist Lyra McKee pleads with rioters to end violence following seven nights of unrest in Belfast Sister of journalist shot dead by the New IRA at riot appeals for calm amid recent unrest in Northern Ireland 19 police were injured on top of the 55 hurt over previous six nights, while police attacked with petrol bombs Journalist Lyra McKee, 29, was shot dead by the New IRA at a riot in an area of Londonderry in April 2019 Nichola McKee Corner spoke after water cannon were used for the first time in six years during riots in Belfast