A mass shooting took place at a crowded South Baltimore event. Why weren’t police there?

Baltimore’s acting police commissioner made a surprising admission on Monday, calling his department’s lack of presence at a large weekend gathering in South Baltimore in which 30 people were shot — two of them fatally — an intelligence failure. Though Brooklyn Day happens every year, Richard Worley said, it takes place on different weekends. If police would have known three or four days ahead of time, he said, they could have put together an operations plan.