It depends on the impact of the lies. The Guardian's Mark Duggan headline was the subject of a PCC complaint awarded against them, see https://www.theguardian.com/media/2012/feb/23/pcc-guardian-m... This could have easily led to more violence. This week The Washington Post recently published the false narrative against a 16 year old boy approached by a native man at a protest (saying that he'd approached and threatened the man), resulting in thousands of violent threats against a child.

'Proper' journalism doesn't exist. Maybe it never did, it's just more obvious now. It's news entertainment.