I really began to understand MLK Jr's line "Injustice anywhere is a threat to justice everywhere" in the past few years. For every injustice allowed (in fact, oftentimes rooted for) we are saying that it will actually be OK to do that elsewhere. Eventually the justification will be OK.
In the USA we said surveillance was OK. Just use it to profile "terrorists" in the so-called war on terror. Use it to profile everyone who appears at the border. Use it to profile every Palestinian in Gaza. Use it to only profile gang members and "criminals." Use it to clandestinely surveil every phone call. Finally, stop pretending: use it to surveil everybody.
How many databases is my face in just because I flew back home from out of the country a few months ago?