I am a signatory to this letter. I think everyone should be. I think it should be pretty non-controversial, actually.
We believe that everyone, no matter what gender, sexual orientation, ethnicity, or religion has the right to play games, criticize games and make games without getting harassed or threatened. It is the diversity of our community that allows games to flourish.
If you see threats of violence or harm in comments on Steam, YouTube, Twitch, Twitter, Facebook or reddit, please take a minute to report them on the respective sites.
If you see hateful, harassing speech, take a public stand against it and make the gaming community a more enjoyable space to be in.