Nottingham-based graffiti artist and troublemaker Questionmarc is probably most famous for pasting up "urinate here" signs all over Nottingham city centre. Now she/he has turned her/his attention to local dealers in death Heckler & Koch and plastered the city with posters designed to act "as a subliminal awareness raiser that the corrupt firm continue to operate from our city."
Questionmarc: Not in Nottingham (collection of images)
http://www.questionmarc.co.uk/content/not-in-nottingham/
High-res artwork
http://www.questionmarc.co.uk/files/wp-content/uploads/2010/02/hk_artwork_large.jpg
LeftLion: Questionmarc interview
http://www.leftlion.co.uk/articles.cfm/id/2548
Shut Down H&K
http://www.shutdownhk.org.uk/
http://www.questionmarc.co.uk/content/not-in-nottingham/ High-res artwork
http://www.questionmarc.co.uk/files/wp-content/uploads/2010/02/hk_artwork_large.jpg 
LeftLion: Questionmarc interview
http://www.leftlion.co.uk/articles.cfm/id/2548 Shut Down H&K
http://www.shutdownhk.org.uk/