A lot of /pol/ is edgy posting, memes and sarcasm, the fact that libertarians and others feel the need to go there is a sign of how polarized things have become.
The left doesn't help, being the most prevalent force right now.
While I do not agree with saying right wing extremism is an issue right now, it very well could be.
The left should practice what they preach about islamic moderates to the right wingers.
Another thought: start giving reap political support to stabilizing forces in the middle east, reforms can take place as things settle down but once the situation in syria is over please get your government to stop supporting every rebel group they can find.
Mind your own nations for a while, maybe settle things with Russia, whatever.