When did it all start to go downhill? Was there a trigger?
There really is no pin pointed time or specific reformation that caused a major social shift in Jacksonville's history, it was in fact an accumulation of events that happened locally and around the world. However, there are events within the flux that deserve more recognition for being pernicious to Jax. One such event(s) are those leading up to The Blue Print For Improvement. A divide and conquer manifesto concerned about the growing number of "non-whites" in the area and correlates the growing number of blacks with the deterioration of the city.
The statistical picture within the city of Jacksonville shows a city in decline…not only has the general population dropped but the white population has declined 10.4% while the non-white population increased 14.1%…Jacksonville population [is] shifting from white to non-white (Blueprint For Improvement, pp.16, 1966)
What should of been exalted as a city of culture, deep rooted in heritage, was for ever catalyzed with white-modernization concomitant of exurbia promoted by the newly ratified Bold New City of the South. After the consolidation of Jacksonville the city did witness "lower taxes, increased economic development, better public spending and effective administration by a more central authority" (Jacksonville Historic Society, Journal-Consolidation). The latent dysfunctions of consolidation, however, would later prove to outweigh it's positive impact with the loss of Jacksonville's cultural capital.
To be clear, it's not about who may or may not of been a racist--nor can it really be proven that there is a bridge between the Burns Administration and Yates' Blueprint. Though, to deny the first act of reform as propaedeutic to the latter especially given context of that era, and to not concern one's self with the possibility that one was antecedent to the other; given such reasonable suspicion, one would not be a very prudent in examining Jacksonville's past if such accusations are not taken into consideration. (JUUC, Transcending Jacksonville, 2012).