Want to make political cartoons?
Very easy to use - limited features: http://www.funnytimes.com/playground/
Middle School Art / More Complex Features - ability to make characters as well
http://www.toondoo.com/ - very powerful tool, lots of options. Log in needed.
http://goanimate.com/studio - a little easier than Toon Doo - still plenty of options - very slow to load?? Cartoon features seems to require an account
Animated Cartoon Maker? - less features/options, but maybe easier and quicker - no account needed
Software Program - costs money, but great!