Carrollton Trivia - ".... 50th anniversary of MLK's "I Have a Dream Speech." However, it would not have been given without prompting from Mahalia Jackson, who grew up in the Black Pearl section of Carrollton. Dr. King had finished his prepared remarks given from the Lincoln Memorial and was about to sit down when Jackson called out, "Tell them about your dream, Martin." You can hear this clearly in the background of recordings made at the time. WIth that, King kept speaking extemporaneously and the rest is history."