Hong Kong's Democracy Protesters Are Doing What No Other Demonstrators Have - Mic
http://mic.com/articles/100234/stunning-images-put-hong-kong-s-democracy-protests-in-perspective
Although the organizers have threatened to kick things up a notch if the government doesn't address their concerns, all you have to do is take a look at their "Manual of Disobedience" to see why things have been mostly smooth.