I could ask the same of undecided2011: "THEY lost the civil war."  Well, I assume he/she means the Confederacy (although "It" might be the appropriate pronoun). But then, we get "THEY need to get over it."  The Confederacy no longer exists. Then...who or what is "They"?  White Supremacists?  The "Anti-protesters"? (A good case could be made it is the LEFT, not the RIGHT you refer to) Why not be clear?   "Before THEY cause the US to self-destruct."  Who or what?  Maybe some statues to Confederate leaders/soldiers?  Naw, couldn't be.  The country can't be THAT wacko.  

In any case, relax, Undecided.  If three million KKK'ers in the 1920s couldn't do it--In fact, didn't want a "self -destructed" country, just a different one--a loosely-knit confederacy (oops, I mean, collection) of malcontents, dispossessed and retrogrades won't do it, either. Heck, through their stupidity the statuary they  hold dear is off to the recycling depots as we speak!