Millions of people voted against their own interests in 2016. All are not "Assholes."

[bench scientist]

64. this. Why must we confine ourselves to only pursuing one group or the other?

Everyone seem to phrase this argument in this way. Either we must go after Trump voters OR we must go after non voters. Never both. I fine that funny, as at the heart of each group is an emotional core that must be reached at , and changed.

Personally, I'm not optimistic that enough Trump voters will change their minds.
MM you're are attempting to apply logical and reason to a group of principally emotional voters, who vote against their interests largely out of fear or hatred, or ignorance. Those are very visceral, ingrained and deep seated emotions to overcome. Education as to why and how what our party offers is better for them hasn't worked thus far.
An individual has to want to see the world differently for that to happen. I genuinely believe there is an empathy gap among most ( not all ) but most of Trump supporters. They have little issue marginalizing, or voting against the rights of their fellow citizens as they believe that the others in some way are different than themselves.( the Trump voters). They voted against minorities, the LBGT community, Muslim community, because they are different. They do that despite the harm to their own interests.
I firmly believe until Trumps policies negatively effect the Trump voter at a personal level they will not change their behavior.

The non-voters are equally problematic. Apathy is hard to overcome. How do you engage someone to care about the world who does not wish to? How do you convince them to care? Again until Trumps policies negatively effect the non voter at a personal level they will not change their behavior.

I'm not saying we should not try but this is at it's core an emotional appeal not a rational one. It's not going to be easy. I think we as a country are in for some very very tough times.
Many tactics should be used, and perhaps many levels of civility depending on the particular individual. Some frankly deserve none. Others perhaps more so, but this is not a simple fix where one approach be nice to all or write the rest off and target non voters is going to work.