From another article about what supposedly justified this:

There was a thread from early January, after news outlets including The Intercept identified Jonathan Ross as the ICE officer who shot and killed 37-year-old Renee Good in Minneapolis. Commenting on a Minnesota Star Tribune article, another Reddit user posted that Ross might be welcomed as a hero in Florida or Texas. John Doe responded by sharing that Ross had lived in Chaska, Minnesota; grew up in Indiana; and served in the Indiana National Guard — biographical details that were circulating widely at the time. “Hopefully he moves up to Stillwater State Penitentiary,” they wrote.

In another post, a Reddit user asked what they should write on an anti-ICE protest sign. John Doe suggested the lyrics to a song: “Urine speaks louder than words.” In a third instance, Doe wrote, “TSA sucks and we all know it.” According to the Reddit user’s attorneys, these were the most aggressive posts they could find.