I try to be as noisy as I can be, so my profile is as much of a blurry mess as possible. Google thinks I'm a fortysomething woman into latin american disco music and chevrolet - and I can only hope that I come up with a similarly freakish profile in surveillance databases.
There's also another chilling effect which we are seeing happening but I don't think the correlation has quite been drawn - trust in law enforcement. I recently had my house vandalised - but opted not to contact the police, as I don't want anything that looks like a law enforcement datapoint, as in the future it could be used against me - suppose I want to run for political office - all you'll see in the papers is "IN 2016 HE HAD POLICE AT HIS HOME FOR UNKNOWN REASONS. PROBABLY DRUGS AND MURDER!". Hell, Roscoe Arbuckle. It's nothing new, but the new tools are sure as hell making it worse.