@darcher It's not so much that it removes them as that it keeps new ones from accumulating. It prevents change (which is generally a slow, effort-intensive process) from being kneecapped.
Hypothetical:
If Trump wins, a lot of my friends will be making plans to move -- to flee the country if they can, or at least to find a safer state to live in if they can't, because they would know the federal government won't be protecting them against authoritarian hate, and hate will once again be officially sanctioned at the highest level.
That kind of thing uproots communities, disrupts projects for change, takes away resources. (...quite aside from being discouraging.)
When more people vote, authoritarians tend to win fewer elections, and the slow processes of change are stomped in the face by fewer and smaller boots.
When fewer people vote, more well-behaved Nazis are able to walk into the bar.
...only I think now we're past the stage where they have to be well-behaved to get in; too many of the bouncers are sympathetic. We now need to get them out.
That's yet another way of explaining why this election is so important: if the GOP somehow wins in any substantial way this November (which I don't think they can do honestly), they will have taken over the bar, and we'll be done with elections until there's an actual revolution. (I can't imagine that being pleasant to live through, assuming one is somehow able to do so.)