The lack of rebellion in the US is much like the lack of traction for modern bands. We no longer just look at what was popular for the last generation: we are constantly drowning in the knowledge that rebellions get crushed, a day in jail now ruins your life, and giant corporations own the government. Why fight the government when you'll just wind up with the same thing and a prison record?
What's so great about a rebellion, anyway? It's as if the older generation is expecting the younger one to flip out as if on command. Why be predictable, when the entire problem is being so predictable that there is no hope for a future?
Perhaps waiting out some important deaths is more useful than a crappy short game with Molotov cocktails. There is no way to teach the ultra-conservatives to see beyond their selfish desires nor to make them see the world inside the cell phone, so we just have to wait for them to go away. We have to raise money to get progressive laws, so we'll work to raise that money.