Even changing the future is debatable.
Depends on which version of the Einsteinian Universe one subscribes to.
One version sees one Timeline that we just travel upon like a two-lane highway.
The other version is multiple Timelines with billions of destinations and off ramps like interstate cloverleafs.................
So... this conversation isn’t going the way I envisioned. Wasn’t meant to get into theory on time and relativity. It’s about Democrats thinking killing Trump is their moral and civic duty. Oh well...