If you have a cell phone, regardless if it's a smartphone or dumbphone, the government is already receiving boatloads of location tracking and metadata from the carriers themselves.
If your using a computer online, they are also grabbing that.
In fact just turning on a Mac broadcasts a Bonjour signal in the immediate area with your personal information. "Joe Smiths Computer".
So it's already too late to bother if Amber Alerts is a government intrusion or not, just using any technological device already is.
Cellphones, OnStar, TomTom's, most computers, ISP's, Wifi routers, iPads, Google, websites etc., all busy providing information to unwanted persons you don't know.
https://www.nytimes.com/2011/03/26/business/media/26privacy.html?_r=3&
http://www.zeit.de/datenschutz/malte-spitz-data-retention/
https://panopticlick.eff.org/index.php?action=log
http://www.clicktale.com/products/mouse-tracking-suite/visitor-recordings
https://www.zdnet.com/blog/btl/google-offers-street-view-opt-out-for-wi-fi-mappi ng-unethical-snooping-yet-we-must-opt-out/63456
http://www.engadget.com/2011/12/01/carrier-iq-what-it-is-what-it-isnt-and-what-y ou-need-to/
And with many devices have sold state drives, like iPods, iPhones, iPads and new Mac's, the NSA method to data destruction is to grind them into a fine powder to remove sensitive data.
http://www.semshred.com/disintegrate_ssds_weblog
Or else a device like this can read even the DELETED data off a SSD, by passing the password + encryption as device makers give them the keys.
http://www.cellebrite.com/
The game is already over, the game has been rigged from the start and it's just geting more worse by the minute.
They have been watching you, tracking you and likely already have a detailed profile on you already collected and to be used at a moments notice.
Many marketing companies already have, it's where the government buys a lot of information to complete it's dossier on everyone.
"Nothing to hide" might be your excuse, but that doesn't rule out they might want to do something to you and it only will get worse the more evil the person is at the higher food chain.
https://www.nydailynews.com/new-york/fbi-arrests-nypd-article-1.1191956
A terrible survelliance machine is being created for the intention of good, but it can easily be turned for evil once those in power get some idea in their head that they can force something onto the people that they don't want or deserve.