issue number one:

they are happy to kill for business
http://www.remembersarowiwa.com/index.htm

number 2:

they're making the people of Rossport (Co. Mayo) pretty darn miserable right now.
http://www.corribsos.com/

number 3:

other bad things:
http://www.foe.co.uk/resource/press_releases/shell_ordered_to_appear_by_11042006.html