If you lived in Indiana as late as 1990, you have met, spoken with or smiled at a former member of the Ku Klux Klan. After all, only a half-century earlier, 1 in 3 Protestant Hoosier men were members.

Michael Yudell, PhD, an associate professor and interim chair of the Department of Community Health and Prevention in the School of Public Health, authored a March 3 post on Philly.com’s “The Public’s ...