I'd look for statistics and graphs showing:
* number of people injured or killed by guns in the U.S.
* number of people injured or killed by guns in western Europe and Canada
* number of people in the U.S. who have used guns to successfully defend themselves against assailants
Identify the different types of statistics, graphs, and illustrations that are appropriate for your topic. My topic is Gun Control.
2 answers
You can look at these sites and determine what kinds of statistics, graphs and illustration other people use.
http://www.google.com/search?hl=en&source=hp&ie=ISO-8859-1&q=gun+control+statistics&btnG=Google+Search
http://www.google.com/search?hl=en&ie=ISO-8859-1&q=gun+control+graphs&btnG=Search
http://www.google.com/search?hl=en&ie=UTF-8&ei=cC6USouZEYbflAf-rd2-DA&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=gun+control+illustrations&spell=1
http://www.google.com/search?hl=en&source=hp&ie=ISO-8859-1&q=gun+control+statistics&btnG=Google+Search
http://www.google.com/search?hl=en&ie=ISO-8859-1&q=gun+control+graphs&btnG=Search
http://www.google.com/search?hl=en&ie=UTF-8&ei=cC6USouZEYbflAf-rd2-DA&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=gun+control+illustrations&spell=1