The street I live in almost all on-street parking with only one or two driveways. There's plenty of parking for residents and overnight you can easily park outside of or close to your own house.
The trouble is that very close by is a sports facility with no parking. At particular times of day the road become chaotic with no parking spaces to return to if you go out. Most of the people who park here do so considerately, but a few don't park close to the pavement and block the road to wide vehicles (it's a VERY narrow street). Others decide it's fine to block a strangers drive if there's no space available. Also frustrating (although perfectly legal) is the not parking even vaguely close to other cars and using up space that another car or two could park in. On the whole it's ok though.
I've spent a long time finding the lack of parking frustrating but have eventually decided that I just need to chill out about it. It is what it is, and using street parking is the only choice the sports-facility users have. I'm telling myself that my inconvenience doesn't equate to their wrongdoing (for most of them), even when I do have to traipse home from streets away with bags of shopping plus baby and toddler 
. Plus I'm sure I've done the same without even realising at other times.
Two weeks ago, various neighbours (not ones I know) all suddenly started putting cones outside to mark 'their' space. All within days of each other. Even if they go out all day the cones are there, and as far as I can see no-one has dared interfere them to use the space for parking.
At first I wondered if someone was doing this as they were disabled and needed better access to their house (fair enough, no-one would begrudge that)... but surely not all of them all the same time?! It looks like someone may have gone first and others have seen their chance jumped on the bandwagon. I had to park next to one the coned-off areas just around the corner from my house a few days ago. As I pulled into it the net curtain shot up and a very angry looking woman glared at me for my entire parking job (whilst holding her curtain up above her head with outstretched arms and pressing herself up against the window!). And that was for parking next to 'her' coned off spot!
I just laughed at the time, but AIBU to think this is pretty harsh on other residents and possibly even illegal? Nobody minds the odd time of doing it if you're expecting a skip or something to be delivered, but 4+ people doing it every day is a lot of road lost that surely everyone is equally entitled to?!