It certainly is starting to feel like it in HK. My wife's parents were born there, and although their friends who live there say that the violence is centered in the main areas for now, it's shut down the airport for the 2nd straight day. Chinese media is portraying the protesters as terrorists, while the HK Police (not indirectly taking orders from Beijing, however reluctantly), is using tear gas and rubber bullets fired at point blank range. Taiwan is watching what is happening in HK with fear and anger I'm sure. China already is building an island in traditional Philippine waters, by simply calming that the body of water (South China Sea) bears their name, therefore they have a claim on it. Vietnam is now experiencing the same encroachment on their maritime waters by China. And so on.
The US (and most of Western Europe) is no stranger to imperialism in our histories, but the aggressors today really seem to be both China and Russia (the latter not just in Crimea, but now in Africa along with China). This thirst for resources and land is reminiscent of the recent past, and that was not a good thing. For now, the US maintains military superiority, but China has the sheer numbers and the will to close that gap, and that is scary. Where will this end?