I know a lot of history of Dr.King himself. When he said let 'Let freedom ring" he's using Anaphora.
The most difficult task was reconstructing everything after buildings were shattered, and the new system of labor, causing slaves to work on new architecture
At this moment, America has dug its own grave. We should properly handle the coronavirus incident, but they still allow airplanes to be flown in and out of the state?! What? We should just elect a proper and intellectual president to lead us in our victory towards coronavirus.
I think the answer is the last one