One more quote from Metres:
Surveillance is observation without consequences…The danger of our post-9/11 world is not merely that we know we are being surveilled; it is that we have willingly acceded the realm of the private in our daily lives. Social media has become another way that we can be controlled. If observation means witness, then it can never be surveillance, because the witness is the one who stands in and testifies to their position and the position of the viewed simultaneously. To witness is to stand with oneself and with others, without regard for the consequences.