I would say :obama-socialism:
Some might argue its Bush Jr. but Obama destroyed so many nations that his death toll arguably surpasses Dubya's once you include the Ukraine war. One top of that, the Iraq war sparked the largest protests since Vietnam, while Obama's destruction of Syria, Libya, Ukraine, Venezuela, etc. went largely unnoticed by the public. Obama also single handedly annihilated all progress made by Black and Hispanic communities when he bailed out billionaires and bankers. What's worse is that the psychopath is largely popular, worldwide, and libs think that his biggest scandal was wearing a tan suit.
Depends how far back "recent history" is. If it goes back to the 80s I'd say Reagan is hard to beat in terms of being the absolute fucking worst AND laying a lot of the groundwork for the specific kind of dystopian hell we're in nowadays.