I agree in spirit, but just-leave-now is the wrong remedy. Sorry. There is no rush -- quick outrages, emotional appeals and media frenzy are poor guides for major life decisions.

Do consider leaving if you think it is warranted (personally, I do), but do not rush. Write a short note to yourself on what you want to do and why, then think hard about this at least once a week, but keep going for a month. If in a month this still seems like the way to go, leave (and if not, stay; there is no shame it that).

That way you also build up resolve to stick to your guns if you get a last minute appeal to stay -- this is a lot easier if you thought about your decision for a long time and decided that what you are doing is right for you. My 2c.