And by the way, this totally spot on speech by Hillary Clinton exemplifies why I'm a full bore supporter of hers. We must defeat the evil Trump champions for the future of America and the World. Breitbart, Alex Jones and all the bigots of the alt-right are destined for the septic tank of history and this November is one more nail in their coffin.
In every POTUS election I'm familiar with (going back to Reagan), the party not in power holds the keys to cultural power. I think it is partially because the 'winning side' has overwhelming majority of its (voting) supporters rest on their laurels and pretend like nothing more needs to be done (for at least 3 to 4 years), and partially because the winning candidate is likely to implement policies in year one that just gives a whole lot of fodder to their opponents. Like, I would've thought 10 years ago and pretty much every year before that, if an African American could ever make it to POTUS that black America would not only relish in the victory, but see their lives and communities get substantially better. Well, we saw the relish in the victory part, but also have seen the black community take what is by most accounts a nosedive. Cause now, there's nothing (at highest level) to fight against. I don't think it is best example, just one that comes to mind. Better example is how gun-rights people have been I believe far more steadfast in upholding gun rights under Obama than I think they have ever been. Likewise, women rights (and supporters) tend to fight far more with Pub in office than not in office. So, if Hillary wins, I see that fight for say year one of her term appearing to be strong and then greatly fizzling out. While all those that resist that (as the propaganda it mostly is) will keep going very strongly in years 2 and 3. When Bush was in office, the Left supporters (read as voters) were much stronger, more unified than they were under Clinton or Obama.
Thus, your comment strikes me as extremely naive if you think alt-right will lose significance with a Trump defeat. The term is now part of the lexicon and if Hillary wins, I see them only getting stronger, more unified.
What you're conveying would need to deny a partisan divide exists and that the divide isn't as much as 25% of the overall population or around 50% of the voting population. Also would mean that all 50% on the winning side cannot rest on their laurels. Some of them surely won't, I believe overwhelming majority will.