All sharks are not dangerous to people.
Killing a shark for it's fin is like killing a rhino for it's horns or killing an elephant for it's tusks. It is truly ignorant like flushing sewage into the water or not recycling plastic containers.
This week our friends from the Ocean Conservancy and the Discovery Channal have teamed up to enlighten the general public and surfers.
http://discovery.blogs.com/shark_conservation/