These visualizations are based on data from d3.ru, an online platform based on a rating system that allows users to appraise other individual users as well as content entries and comments posted by them.
Like reddit.com, d3.ru has a concept of karma. There are also communities with opposite political views which leads to mutual downvotes in each other's karmas.
Let's take a look at how changed karmas of all users on d3.ru:
The red lines ended up with negative karma and the green lines - positive.
You may notice a green mark around September 2016 - this is where users of one community organized to downvote users from the opposite community. The event was called "karmapulta" (karma + catapult).
Let's take a look at the downvoted community:
As the mark below 0 is green, this shows how users of the downvoted community organized to upvote the downvoted users.
If we leave only the most affected users who were downvoted and then upvoted during the karmapulta:
