Richard Nixon for one thing. It was also the turning point when the left started it's takeover of the Democrat party.
Everybody and their brother, since 1945, has been claiming some epic take-over of the Democratic Party. There’s probably fifty different groups declaring their ownership and command of the Democratic Party.
If the gameplan for the Republican Convention is some BLM maneuver....at least a quarter of the Democratic Party will vacate permanently and become firmly attached to Trump.