Here are two topical graphics at different ends of the scale. This one, from Canada's National Post, on the number of gun deaths in the US in the month following Sandy Hook, is excellent. The first rule of graphics is to make the information easy to understand. Even without studying the detail you get an immediate understanding of the scale of the very scary problem.
On the other hand, this one on the USA cycling scandal can only be described as infographic hell. Please only take a look if you have headache tablets to hand. As designer David Bailey ooks like someone stuck their Panini Sticker collection on the London Underground map. He has a point, except that the underground map is easy to follow. This one is just impossible.