Hey I'm not saying "give up, hand over your passwords and keys to the NSA, don't ever vote or write to your representatives" but we're in a discussion over who you should be worried about spying on you more - non-specific "China" or some domestic intelligence services (or an alliance of a few "friendly" countries). I think your comment is rooted in a sort of common belief that America is, for all its faults, just plain more decent and just than those scary foreign places - along the lines of American Exceptionalism. You even mention they can "change your opinions without you even noticing" - this is basically the Korean War propaganda about communist "brainwashing" techniques. The sad reality is both USA and China are willing spy on people, if you're based in the USA you should really care more about the USA's attempts at surveillance than China's.