What autonomy are you giving up by "allowing" the government to collect and analyze publicly observable information? What power is the government getting? Sure

What autonomy are you giving up by "allowing" the government to collect and analyze publicly observable information? What power is the government getting? Sure, this may be used to limit your autonomy. Much like a police officer could shoot you for no good reason. Ergo police officers shouldn't carry pistols? If you can limit potential abuses only by handicapping the government you've already lost.