The unfortunate part is that it's a whole lot of apathy. I'm sure it's not easy, even for a foreigner, to find the heart of some people willing to speak or move against the Chinese government, but so many who I ran in to were casually trying to remain in their own world disjoint from the government. They feel a little rebellious just to support the stores that sell ironic Mao Zeodong merchandise and love to mildly mention that the government is really not that great here. That's about the depth of what I actively observed.
I'll disclaim that I didnt' spend much time talking to those in what would have been the most charged fields (politics or philosophy, perhaps), but the general apathy was sort of disheartening.
It's not all negative though. The educated Chinese are largely embracing the internet and desire to involve themselves more. For many, they give you a surprised look when you ask them about bypassing the firewall: you mean you don't have access to a proxy? Really? I thought everyone did. If this is the face of the new Tank Man, it's definitely going to be a different ride, but the transformative power of an enormous information pipeline plugged into the future leaders of your country still seems pretty portent.
And ethnic strife would need to be the topic of a whole essay. China has cultural problems there, too.
Most of the "strife" in China nowadays is ethnic I think.
(Disclaimer time: I'm Taiwanese, not Chinese. My view of China is a bit skewed.)