I feel this is what a lot of people forget -- or ignore -- when they come on HN to proselytize for this week's armchair activist crusade. 99% of the time, this shit is used to stop legitimately dangerous people. It's manned by people who aren't out to ruin your life; they just want to live theirs with as little shit to worry about as possible.
Reddit, HN, and the like are collectively patting themselves on the back and talking about revolution as though they're going to do anything other than click those little arrow icons next to posts. The third top comment here is talking about DDoSing the post office -- with absolutely no hint of irony. It's ridiculous.