Earlier quoted context omitted.
This is the so-called "chilling effect" that's one of the most worrying implications of mass surveillance on a society... people feel afraid to speak out due to a concern they may be added to a list of some sort, and face negative real-life repercussions due to expressing their free speech. There were a couple of times where I actually called the public contact numbers for NSA & GCHQ regarding particular stories abou…
It's not so much about mass surveillance but rather things like the TSA and stupid immigration policies which are at play here. Really, spotting your name on a petition isn't mass surveillance. It's not even a breach of privacy in any sense, because that's exactly what petitions are for.
No. The goal of a petition is to show support for a course of action, and in this context, exercising freedom of speech in a democracy.
Taking the list of people who signed a petition, assigning a "risk score" to them because of their activism, storing it in a database for the future, and using that as a means to make decisions that affect those individuals freedoms is exactly the purpose of mass surveillance. In isolation, for one petition or one activity, it is a sensible thing. As a general practice it promotes the notion of thought-crime or pre-crime in which an individuals freedoms are curtailed because the individuals exercise of their freedoms is unpalatable to either the elected officials, or the entrenched bureaucracy.