Nikole Hannah-Jones is an investigative journalist and a co-founder of the Ida B. Wells Society for Investigative Reporting. Today, Knight Foundation is announcing $150,000 in new support for the society to increase diversity in the ranks of investigative reporters. A few years ago, I was sitting in the lobby at a computer-assisted reporting conference with three other journalists, when looking around, one of us jokingly remarked that we were about 95 percent of the black journalists there.After a few chuckles, the conversation turned serious. For years, we had been attending investigative reporting conferences with just a handful of other journalists of color. And when we looked across the journalism landscape, it was rare to see black journalists on investigative teams and at investigative news organizations.