this is a simple site, with forum & several pages, mostly static:
1) static page including a video clip which you need to find also. it should be a footage of cancer acute pain suffering patient. the best would be a 30 sec clip, no sound, showing the acute pain crisis, something shocking.
2) a petition page.
3) feedback page.
4) 2-3 static pages with experts talking about the issue.
5) forum for general audience.
we allow user registration!
we also need an option (as admin) to send mail to all subscribers, both of the site and the petition.
you will need to make the entire work, both design and coding, and footage finding.
personally, i like Joomla, but it might be too much for this project.