In retrospect they all wonder, but nothing - absolutely nothing was done while Trump was campaigning. None of the celebrities spoke out openly, sure they had a video encouraging everyone to vote, but I guess half of eligible voters didn't see that video otherwise we wouldn't be in this predicament.
The ones to really blame for the Trump presidency are
1. the eligible voters who sat on their asses instead of going out to vote
2. the media, reporting every **** storm coming from Trump's mouth and virtually nothing from Sanders and mostly negative press about Clinton.
3. Hillary for not taking Bernie Sanders as her running mate.
Nothing against Kane, he's a lovely man, but he was non descriptive.
With Bernie Sanders on her side, she most definitely would have won.
Trump would have been happy too as I don't think he really has his heart
in it. He has no interest in government per se, doesn't know how government works, hasn't read the constitution, and is mentally ill equipped to run a country.
In lieu of all this, a Bruce Springsteen should have and could have done a few concerts for Bernie or Hillary, but that's about it.