That's just not looking back far enough. The war on terror was a continuation. I'd say we're seeing the results of not stringing up all the slave owners after the Civil War. American industrialists going back to the robber baron era and beyond have always loved autocracy, specifically fascism. This was heightened by the fear of communism. When FDR was elected, there was an attempted coup (ie the business plot [1]). H…
Your argument/timeline seems a bit confused in a couple of places. Our problem was "not stringing up all the slave owners after the Civil War," yet you then point out American industrialists (going back to the robber baron era) loved fascism. But the industrial parts of the US were the Northern states, not the South. Additionally you complain that the Democrats are no effective opposition but don't appear to consider…
Also, the slave owners who got strung up should probably have included Andrew Johnson. Without Lincoln's unfortunately untimely demise or without Johnson we may well have avoided Confederate leaders regaining power and the whole Redeemer era of winding back rghts for the former enslaved.