Audio from a 2015 speech by Michael Bloomberg is over his strident defense of stop-and-frisk policing. But in the speech, the former New York City mayor and 2020 presidential candidate also makes a series of claims about gun violence that at the time were widely known to be false or even harmful.

Bloomberg is a prominent voice in gun control and gun violence reduction. He co-founded the gun violence prevention group Everytown For Gun Safety in 2014 with an . He sits on the group鈥檚 advisory board and, according to an Everytown spokesperson, continues to provide about 30% of its $35 million in annual contributions.

In the audio, Bloomberg incorrectly says the profile of murderers and murder victims 鈥渁re male minorities 15 to 25.鈥�

鈥淭hat鈥檚 true in New York,鈥� he says in the audio. 鈥淭hat鈥檚 true in virtually every city in America.鈥�

But by 2012, , had found that 70% of people involved in gun violence fit a narrow profile. in their 20s to early 30s, with seven or more arrests, part of some form of clique or gang, and who have themselves been a victim of gun violence or know someone who has.

鈥淭hat is a very small number of people,鈥� said David Muhammad, the executive director of the National Institute for Criminal Justice Reform, a non-profit organization that consults on criminal justice systems and gun violence reduction. 鈥淎nd what we have found, is that is very close to the risk profile in nearly every city that has a significant gun violence problem.鈥�

By the time Bloomberg made his comments in 2015, Muhammad said, 鈥渢hat was generally known to people in the field of gun violence reduction.鈥�

Muhammad served as Deputy Commissioner of the Department of Probation in New York City while Bloomberg was mayor. His work in Oakland helped reduce gun violence in the city by 50% between .

In the audio, Bloomberg says the solution to gun violence is to flood minority neighborhoods with police.

鈥淧eople say, 鈥極h my God, you are arresting kids for marijuana who are all minorities,鈥欌€� Bloomberg says in the audio. 鈥淵es, that鈥檚 true. Why? Because we put all the cops in the minority neighborhoods. Yes, that鈥檚 true. Why鈥檇 we do it? Because that鈥檚 where all the crime is. And the way you should get the guns out of the kids鈥� hands is throw them against the wall and frisk them.鈥�

But by 2015, Muhammad says, that approach was known to exacerbate the underlying causes of gun violence.

鈥淭his notion of 鈥榖roken windows鈥� kind of extreme enforcement of low level offenses has been debunked and has proven to result in the type of mass incarceration that specifically exacerbates racial tensions and inequalities in the system,鈥� Muhammad said.

Muhammad says what has been is the opposite of what Mayor Bloomberg suggests: non-police interventions with the small number of people who are at the highest risk of being involved in gun violence and deprioritizing low-level crimes to focus police attention on gun violence.

By 2015, had that coupling community partnerships with 鈥渇ocused deterrence,鈥� a policing strategy concentrating resources on the small number of people responsible for much of the violence, can reduce gun violence.

In a statement, Everytown For Gun Safety said it is independent from Mayor Bloomberg. As an organization, it initially focused on gun safety legislation and only recently got involved in programs to address community gun violence.

is a public media reporting project on the role of guns in American life.

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