I'm skeptical that this can be boiled down to some particular issue like that.
It seems far more likely to me that the block downvoter is simply doing it out of a sense of resentment regarding the individuals he/she is downvoting. I say this because he/she seems to downvote posts rapidly and without reading them, which suggests he/she is targeting individuals rather than specific viewpoints. In particular, most of the downvoted comments do not seem to have anything to do with gender.
It's possible that you're right and Eugine (or whoever is doing the block downvoting) is on a personal mission to destroy progressive views on this website. However, this is a very specific accusation and I'd like to see more evidence supporting it.
Reading through your own posts, you have focused far more on gender than either of the three you mention, and this suggests to me that you have to reconsider your own biases. Sorry, but I feel I have to say this.
It is evidence of an ideological or even a personality difference, even if it is not the specific issue.
Reading through your own posts, you have focused far more on gender than either of the three you mention, and this suggests to me that you have to reconsider your own biases. Sorry, but I feel I have to say this.
I do not consider this pattern to be anything but very weak evidence. I'm surprised that you noticed this though - I looked through my comments, and I did not see very many comments about gender going back to May.
I'm just tired of the signal pollution, and would like to be able to use karma to honestly appraise the worth of my articles and posts, without seeing 80% of my downvotes come in chunks that correspond precisely to how many posts I've made since the last massive downvote spree.
EDIT to add data points:
Spurious downvoting stopped soon after I named a particular individual (not ALL downvoting stopped, but the downvotes I got all seemed on-the-level.)
One block of potentially spurious downvoting occurred approximately one week ago, but then karma patterns returned to expected levels. I consider this block dubious, because it reasonably matches what I'd expect to see if someone noticed several of my posts together and disagreed with all of them, and did not match the usual pattern of starting with the earliest or latest post that I had made and downvoting everything (it downvoted all posts in a few threads, but not in other threads), so I'm just adding for completeness.
Spurious, indiscriminate downvoting started up again approximately half an hour ago on Sunday (12/1/2013), around noon MDT.
Edit: And now on Tuesday, 12/3/2013, at 10 AM, I'm watching my karma go down again... about 30 points so far.
Edit: And now on Saturday, 12/14/2013, at 2 PM, I'm watching my karma go down again... about 15 points so far, at a rate of about 1-2 points per second.