a, b, Power laws for the KKK ecology (a) and the ecology of illicit financial activities (b). Their power-law exponents (α) are similar in a and b, and also consistent with c. c, The results from aggregating data from different thematic subsystems, each of which has a power-law distribution with an exponent (βi) distributed around 2.5. d, Summary of the simulation procedure. N power-law distributions are created with a power-law exponent distributed around 2.5. Power-law exponents were then sampled, followed by a power-law test. e, Distribution of the resulting power-law exponents from this simulation procedure, for different values of the mean number of points in the underlying distributions (mu values). The resulting power law exponents α are centred near 1.7, as observed in a and b.