evidence: The data confirm what homicide researchers have long known: most murder cases in which the race of the killer and the victim are known are intraracial — that is, they are of the same race. This was the case in 2013, according to FBI data. [...] That pattern still holds true. FBI homicide data for 2018, the last year the bureau published a full crime report, show that the vast majority of murders were intraracial. [...] The graph purports to draw from 2013 FBI crime data. It accurately shows that white-on-black murders were the rarest kind of homicide that year, but the graph misrepresents the relative frequency of white-on-white murders, which constituted the largest proportion of all homicides. Experts say most homicides are intraracial.