Pinkychique, I'm so sorry to hear about the cyclist that was struck down in your home town. I know how heart-breaking and frustrating it can be to hear about a tragedy like this. Even if you might not have known him personally, it can still have an enormous effect on the psyche.
How about organizing a local Critical Manners ride? They differentiate themselves from Critical Mass by <gasp> actually following local traffic laws. Then you can get together monthly with like-minded individuals to remind drivers that there are more than just cars on the road. Also, get involved by writing to your local legislators about the need to educate the public about sharing the road. Are there any local cycling groups(we have the CBC in Washington) in your area? Not only do they organize group rides, many of them work to lobby for cyclists' rights and cycling facilities. You could become a member to support their efforts.
More discussion on Critical Manners here:
http://groups.google.com/group/critical-manners-ride-sf
~Soo