Oxfam - The Bus
This is one of those images that makes its point so much more powerfully than it would with just words. All the more so when - on researching the background to this campaign - I came across another copywriter's observations on "the same poster":http://www.joannatidball.com/blog/2015/03/oxfam-poster/ the year before, which confirms that these statistics are even more shocking than they were.