The Rev. Irvin Porter, associate for Native American Intercultural Congregational Support in the office of Racial Equity & Women’s Intercultural Ministries, has offered up many presentations on the Doctrine of Discovery and the more than 500 years of history between Native American and white people in this country. Porter told Between Two Pulpits hosts Bryce Wiebe and Lauren Rogers Monday that only once has someone responded, “I didn’t do any of that, so why should I feel guilty?”