I think the answer is don't pick and choose which laws you feel like obeying. If you want cyclists as a user group to be taken seriously and treated with respect by other road users and society as a whole, then we need to smarten up our act as a group. It's unfair, but the reality is that because society is so Car-O-Centric then infringements, nobbish riding, RLJ's, no lights etc by a few reflect disproportionately upon the well behaved majority. This is why I tend not to get too het up by the videos of bad driving posted by the camera Taliban - plenty of cyclists still behave like twots, so why should we expect other road users to be any better?
Look after your own riding, keep yourself safe, set a good example, that's all you can do. If enough of us do it and keep doing it then eventually we may get treated with the consideration and dignity that we feel we deserve.