[megantic]

1) we'll take another example, let's say you have your own religious views and those get collected in a database, seemingly no harm done here. Then comes a newly elected government with different religious views who decides people holding the same religious views as yours should wear a distinctive sign to warn the public, then to gather those people in camps, then starts mass killing those people on an industrial scale. This happened before, if it were to happen again in the future you would have no way of hiding facts about you as everything has been collected about you for years.

[nrivadeneira]

Wow....you just took web analytics and tracking and somehow morphed it into the holocaust. That's probably the biggest slippery slope argument I've ever seen in my life.

[dontstylemycss]

This is obviously an extreme example, but it's valid nonetheless. nazi germany had to build the database (thanks IBM) they needed, a future nazi, fascists or the like government wouldn't have to, those databases already exists in much more details nazi germany would have dreamed of (facebook seems to know you're gay before you do or your family does [1]).

But this nazi example is one everybody can relate to because we're all familiar with it. But if this is too strong we could go a bit further in history and talked about richelieu "If one would give me six lines written by the hand of the most honest man, I would find something in them to have him hanged." and the current state of us law [2].

[1]: http://americablog.com/2013/03/facebook-might-know-youre-gay... [2]: http://www.harveysilverglate.com/Books/ThreeFeloniesaDay.asp...