COMMENTABLE ILLUSTRATION

http://kymbalthazar.com/blog/category/political-illustration/

"illustration can be used to ‘comment’ on a particular subject,
and to therefore, be expressive and in turn, form an opinion.
The most effective method being, where you the illustrator,
begin to express your own feeling, or,
discover truths about a subject and pass it on,
thereby creating an opinion to a wider audience.
It is one of the most interesting and complex aspects of illustration,
where illustrators start to express their own feelings on a subject."

I believe political illustration falls into this category, found in newspapers such as The Times and The Observer.