By voting for the lesser of two evils, you are minimizing the injustice.
What you fail to see is that by voting for the "lesser of two evils" (1) you are necessarily voting for evil per se and (2) you are perpetuating and enabling evil. It is not an actual solution to the problem of evil! I would think that libertarians would be above this "lesser of two evils" crap. Isn't that precisely why people get disgusted with the two main parties in the first place?
Furthermore, are the evils presented to us really that different or lesser or greater than eachother? It's a package deal! It's two sides of the same coin! You get a great big dose of evil whichever way you slice it. Both parties and all canidates are all around statist. They all support the same fundamentals. They mostly only disagree on nuances and implementation. They're pretty much all pro-war and pro-intervention. And they all want the same thing: a position of political power over everyone for themselves. So it's absolutely futile to engage in such a process with the hope that it will actually lead to the elimination of the problem itself. You're not striking at the root, and not even at the branches. You're missing the target altogether.
It does not logically follow that you're minimizing anything. In practise, the state (and hence the injustice) will most likely continue to actually grow. At best, you're minimizing future increases in injustice. But that's hardly a strategy for someone who wants to abolish injustices as an ultimate goal. It's absolutely counterproductive. If you so clearly see democracy as a sham then that would be all the more reason to not participate in it. The objective evidence of what actually often happens when the democratic process occurs is entirely against you, regaurdless of who the canidates are. The problem is institutional, not a matter of personalities. You can't defeat institutional problems with a mere regime change.
Don't say that all injustice is created equal! For an extreme example, the United States' government is much, much less evil than the North Korean government; neither is legitimate, but one violates more rights.
It does not logically follow that I should therefore have voted for George W. Bush because he is allegedly comparatively less evil than Kim Jong Ill or whatever his name is. It does not logically follow from the fact that some governments are worse than others that supporting the "less evil" government is a strategy for anarchism. Due to your pragmatism, you turn the debate into a ridiculous quantative one rather than a qualative one. We can waste our time all day making a comparative analysis of the quantity of injustice perpetuated by different governments and different rulers. It would do nothing to address the qualative problem of injustice itself. Actively participating in electing a more "benevolent" dictator is not a sensible strategy if one's goal is actually eliminating dictators, no matter which way you cut it.
No, it's acknowledging the fact that their position of power will exist, regardless of whether I vote.
As usual, your reasons for voting are actually reasons against voting. If it's true that even if you do vote, the institutional problem will remain no matter who you vote for, then if your goal is to actually eliminate the institutional problem, obviously voting is not going to get you anywhere! It logically follows that if voting is futile with respect to the goal of actually eliminating positions of power, in the place of voting one should try to find other ways to obtain the goal that aren't futile (hence, the need for something like Agorism). Do I have to beat a dead horse? Sheesh. You keep making arguements based on the premise that the choice is between voting and doing nothing. I keep asserting that voting is futile, and you keep responding with the notion that therefore not voting is futile too. You're ignoring the alternatives to voting. You argue as if there is a vacuum in the absence of voting, which is not the case. I don't merely suggest that you don't vote, I suggest that you engage in direct action instead of voting.