Even as a motorcycle rider, and a somewhat loud one at that, I understand where you guys are coming from. Racing on city streets, revving the engine needlessly, or even riding in packs late at night is not very conscientious of those around you. Living in a city that is so crowded, we all owe it to ourselves to watch out for others wishes (I won't go into anything about people on cell phones, texting, honking, etc.).
I will speak in "I," just for simplification. I'm not making an attack or defending myself so much as I'm trying to play Devil's Advocate

. There are always at least two sides to every argument.
As for the parking in full car spaces: First of all, my main goal is to be able to chain my motorcycle to a street sign. Coming with living in such a dense city, also comes the added bonus of a higher theft rate. Since finding a garage that is reasonably priced or allows sharing with other motorcycles is tough, I am unable to properly secure my motorcycle off the street. Chaining it to a sign is about the best deterrant I have.
Just because the motorcycle is smaller and could fit between two driveways, doesn't mean that I should be forced to not secure it if I can, just because I might take up an entire spot on the street. I pay the same registration and insurance that you do and should be afforded the same rights. You have the same access to the spaces as I do.
Also, I have had an issue with someone hitting my motorcycle when I was parked perpendicular to the curb to save space, in between cars. There was enough room for them to parallel park but, whoever it was, didn't look or realize the bike was back there, and they hit it, knocking it over. They also weren't kind enough to leave a note and my insurance had to cover it. Not fun for me.
But, there is an easy way to address the situation: Write them a note asking if they would mind parking in the spot between two driveways. If the person is chaining up their motorcycle, they might not want to park it in the smaller spot (if there is not a sign there) and try to understand why. If it continues to aggravate you, then maybe you could work out a deal to help secure them a spot around a sign (eg, park a little behind/in front of one so that it can be held for them). Personally, I'd be willing to do that; they might too.
I'd also be more than willing to park on the sidewalk on the passenger side of the road, if I didn't get a ticket or end up ticking someone off who can't get out of their car as easily (so, they have to let people out BEFORE getting to the spot).
We all have to live together and put up with each other's actions, all within reason, of course. I agree with calling 311 about excessive noise and definitely with calling 911 on anything that endangers lives.
However, it can definitely go too far that it would affect us legal riders. The cops won't be able to tell us apart and we'll be harassed, just because we happen to be on a motorcycle in Astoria.
I can't go off on every person I hear telling a stupid story about breaking up with their sig. other while riding on the train because it's not illegal to talk on the phone in public. Even if I'd like to stand on the platform and interrupt their conversations. All I ask, as a motorcycle rider, is that there doesn't become a vendetta against all riders.
Thanks for listening to my opinion.