“I’m here to comfort the afflicted and afflict the comfortable.”
– Dorothy Day, quoting Finley Peter Dunne
“I’m here to comfort the afflicted and afflict the comfortable.”
– Dorothy Day, quoting Finley Peter Dunne
Catholic Trans* 
I’m not aware of Day ever using this quote. The presdent of the University of Notre Dame, Fr. Theodore Hesburgh, did use it to
chararcterize Day when he awarded her the Laetare Medal.
You might be right. One site I read said that the phrase has been taken up most notably by Mary “Mother” Jones and Dorothy Day.