I assume most people here have heard of “For all time”, a dystopic scenario with a POD in 1941 – the death of FDR. Then, everything that can go wrong for human civilization goes wrong.
I’m aiming for a counterpart of FaT, with a POD in 1968 to make things more difficult. It’s not supposed to be a utopia, but more of a contrast, meaning a good string of presidents etc. So what 1968 POD would be required to these events?