EFF's brief, which was summarized in one part of this decision, is available here: https://www.eff.org/document/eff-counterman-v-colorado-brief
"Without sufficient protection for unintentionally threatening speech, a high school student who is still learning norms around appropriate language could easily go to prison for sending another student violent music lyrics, or for unreflectingly using language he read in an online forum. “[A] drunken joke” in bad taste can lead to criminal prosecution. Perez v. Florida, 580 U. S. 1187 (2016) (SOTOMAYOR, J., concurring in denial of certiorari). In the heat of the moment, someone may post an enraged comment under a news story about a controversial topic. Another person might reply equally heatedly. In a Nation that has never been timid about its opinions, political or otherwise, this is commonplace."