Historically speaking those are yesterday.
Heck, I remember the Vietnam war and the end of it (I was 12 at the time).
Of course it will work. If enough people will get off their well-fed asses that is, and there lies the biggest problem.
> I think Trump opposition is also in trouble for not having a clear goal unless the goal is "remove Trump because I wanted Hillary to win".
No, that would be the wrong goal.
More something along the lines of 'stop this madness or we'll shut the country down until congress presents a working plan on how we're going to:
(1) get rid of Trump
(2) put safeguards in place that limit the power of the Presidency
Way too much power in those executive orders, it should not be possible for a single individual to affect the world this radically on such a short timespan without adequate debate and on-the-record voting by people that can be held accountable.
Republicans are in power, they own this mess, they should solve it. And if they don't perceive it as a mess it is fairly easy to make them see the light if enough people will connect, and I suspect that by now plenty of Republicans see it the same way.