From JIRX:

"Thank you for contacting Steam Support. Your account has been disabled due to activity involving a Steam Community group which you are a member of. The group has since been administratively disabled. We will make an exception and enable the account once. Any further activity relating to the actions perpetrated by this community group may lead to this account being permanently disabled. Your account has been enabled, and the password reset in a separate message."

So, I'll be leaving this Steam group. For various reasons, Valve might believe this group to be harmful, even though I was only trying to tell the world of freedomwas's plight. Sometimes you try to do something right and big meanie's just push you back down :(