Dr. Martin Luther King, Jr. Holiday / Inauguration Day Events (Tucson) January 20, 2013 by AZ BlueMeanie Posted by AzBlueMeanie: The Tucson Southern Arizona Black Chamber of Commerce has two events for the Dr. Martin Luther King, Jr. holiday, and Inauguration Day on Monday, January 21, 2013. Share this:FacebookTwitterEmailWhatsAppRedditPinterestMorePrintPocketTumblrLinkedIn