simply this, it does not matter if you are breaking the law or not its only matters if the people "think" you are breaking the law and that is enough for them to come down on you with all their powers.
look at jean charles de menezes the guy had done noting wrong was just going about his day as normall, one small slipup in the command structure and they belive he is a terrorist about to blow up a bomb so give the order and kill him.
or how about this, you walk every day along the same bit of street on the way to work or whatever. doing the same trip in reverse there is a guy over time you get to recognise him give a nod in passing maybe say hi, you bump into him in a corner shop and give the same responce.
turns out the guy is some mega terrorist going to blow up the earth with a paper clip and some bleach MacGyver style. so they start looking into you thinking its some coded trasfer the chance meeting on the street with nods and winks the corner shop was a dead drop of orders or something like that and from noting you are on their most wanted list.
look at jean charles de menezes the guy had done noting wrong was just going about his day as normall, one small slipup in the command structure and they belive he is a terrorist about to blow up a bomb so give the order and kill him.
or how about this, you walk every day along the same bit of street on the way to work or whatever. doing the same trip in reverse there is a guy over time you get to recognise him give a nod in passing maybe say hi, you bump into him in a corner shop and give the same responce.
turns out the guy is some mega terrorist going to blow up the earth with a paper clip and some bleach MacGyver style. so they start looking into you thinking its some coded trasfer the chance meeting on the street with nods and winks the corner shop was a dead drop of orders or something like that and from noting you are on their most wanted list.