David Cay Johnston, an investigative journalist who for more than two decades has been documenting how government policy creates economic inequality, will be the featured guest speaker on Equal Pay Day, April 12, 7 pm. This is the day when, on the average, women must work into 2016 to make the same amount of money as men earned in 2015. Johnston is a best-selling author and winner of a 2001 Pulitzer Prize for his reporting on tax policy in The New York Times.