Political moderation is fostered by limiting direct democracy and bolstering representative government.
That was James Madison's model of democracy.
Take human nature into account and design a system that champions tolerance, minority rights, and blocks political lurching.
It is an imperfect system but better than all others.
Alas, 50+ years of political party reform leading to hyper- democratization, decades of shock radio, the it-is-what-it-is reality of social media, has empowered folks who really should stay home with their six-packs and watch Extreme Sports on television.
US voters face an unenviable choice between Trump, Clinton (maybe Sanders) and the Gary (who?) Johnson.
All are deeply flawed candidates.
When an electoral system tells you this is the best America can do -- fix the system!
America needs to do better.
I am dismayed by Republican worthies like Paul Ryan and GOP mega-donors like Sheldon Adelson lining up behind Trump.
As Charles Murray wrote definitively recently in The National Review:
"Donald Trump is unfit to be president in ways that apply to no other candidate of the two major political parties throughout American history."
Trump make America great again? I don't think so.