The most obvious coincidence is just very poor governance and oversight by the political establishment. No long term vision, no respect for history, no serious leadership. One does not need to get deep into conspiracies - unless you want to.
This crop of Democrats are not the same as Roosevelt, Kennedy or even Clinton democrats. They are self-absorbed, petty, small minded people who act recklessly and carelessly on the issues that are of the most critical importance while pretending that insignificant and speculative issues are important purely to satisfy their egos, sense of virtue, and as red meat for their voting blocks. They are not competent to run a banana stand let alone the cities and states.
They want you to think it is incompetence so you don't come to the realization that it was premeditated, and you are more than willing to cooperate.