Home  >  People Fixing the World  >  Meeting Colombia’s ‘Violentologist’
People Fixing the World
Meeting Colombia’s ‘Violentologist’
People Fixing the World
Sep 10, 2019

For the past 20 years, police chiefs and policy makers around the world have been fascinated by an idea: that violence spreads through cities like a disease, with patterns of clustering and transmission, and opportunities to inoculate communities against it.

Violence-reduction programmes, influenced by epidemiology, have been implemented in Chicago, Glasgow and - most recently - London. But before these initiatives, a link between violence and disease was made by a Colombian doctor called Rodrigo Guerrero. When Guerrero became mayor of Cali in Colombia in 1992, the city was in crisis. It was the height of a war between the Cali and Medellin drug cartels with the homicide rate reaching a shocking 120 per 100,000 people. Guerrero’s approach was not to wage a war against the cartels, or to cave into corruption. Instead, he used his knowledge as a Harvard-trained epidemiologist to gather data about the exact causes of homicide, make hypotheses, and try interventions. “I was no longer an epidemiologist, but a violentologist,” he recalls.

In this programme Dr Guerrero gives reporter William Kremer a tour of his city and explains his approach.

Reporter: William Kremer

(Photo Caption: Dr Rodrigo Guerrero / Photo Credit: BBC)

More Episodes



Apr 14, 2026
Back from the brink: Uganda’s gentle giants

The eco-tourism that is helping to protect mountain gorillas in Uganda.

Myra Anubi is in Uganda visiting the Bwindi Impenetrable Forest. It’s one of the few places that gorillas still exist in the wild, and even better, in recent years their numbers have actually been rising and they are no longer considered critically endangered.

This is partly down to the hard work of Dr Gladys Kalema-Zikusoka and the Conservation Through Public Health organisation. They engage with communities living close to the gorillas, who were often poaching them and destroying their habitat, to help them better understand the animals and tap into the potential for eco-tourism. They also encourage other forms of enterprise, supporting local coffee farmers with training and investment.

Myra meets former poachers now involved in conservation and speaks with local farmers - often women - who look after the coffee plantations. She talks to the village conservation teams involved in protecting the gorillas. And of course, goes into the forest to get a glimpse of these incredible creatures herself.

People Fixing The World from the BBC is about brilliant solutions to the world's problems. We release a new edition every Tuesday. We'd love you to let us know what you think and to hear about your own solutions. You can contact us on WhatsApp by messaging +44 8000 321721 or email [email protected]. And please leave us a review on your chosen podcast provider.

Presenter: Myra Anubi Producer: Richard Kenny Editor: Jon Bithrey Sound mix: Andrew Mills

(Photo: A mountain gorilla in Bwindi Impenetrable Forest. Credit: Richard Kenny)


23min 14sec

Meeting Colombia’s ‘Violentologist’

--:--
--:--