My neighbour asked to trim branches from my 40yo elm tree hanging over his fence to which I agreed. I came out 30 mins later to find he'd jumped the fence and cut down probably 50% of the canopy including large branches 2-3m inside our fence line.
Not happy.
Plus as the tree was north to him, he now has the full force of sun beating down on his previously shaded patio and lounge room.
Many Councils have rules about ANY pruning of trees that are (common guidelines used seem to be) 3m high +/or 5m canopy spread.
For your own protection I'd call your local council just in case - not the kind of Xmas present you'd want. One local in our area was fined $5,000 by RCC.
If you're referring to traffic safety cameras, well, I haven't driven in Melbourne recently...
Some reckon Switzerland is absolutely packed with speed (and red light) cameras, with high fines to match them.
As for cameras watching your every move, it's hard to go past London in terms of numbers.
For that matter the entirety of England, Scotland and Wales. The UK pioneered the commercialisation of number plate recognition technology as part of their measures to deal with the IRA bombing campaign. They coupled it with CCTV on the approaches to most tube stations, railway stations, airports etc. The entry/exit to every village, town, city has the automated number plate recognition cameras (and back-ups) covering them.
Post those 'troubles' they have put it to IMHO excellent use (in part) and whenever a child is abducted (either on purpose or by a car thief by accident) the whole network is switched on and quite often they find the child within 90 minutes.
Curiously enough it is not 'officially' used the rest of the time. Unofficially is another matter but that will probably come out in a film down the track.
In NSW many police cars are now fitted with it but the crew tend to ignore it as on a typical suburban street it will be pinging continuously - showing every unpaid ticket, unlicensed car, suspected bail absconder, parole violator, or outstanding warrants (say for unpaid parking fines).
When they first came out the crews would stop the first dozen or so times but the paper work (aka screen time) required in NSW for EVERY incident means they cease to operate as a Patrol car.