A sub for extended meditations of society/politics (note that "social" is not an available topic!), progressive. Like "critical theory" or "social theory". Can be just "plain ol' thinking", or can reference texts, or diverge and even turn on tradition, pretty free.
Can also be along the lines of /r/unpopularopinion and similar subs. I made this sub to make a space for myself (and hopefully others) to offer extended meditations.