I know it’s a touchy subject, but I’m angry that more isn’t being done about global warming, especially because of the Polar Bears (and similar situations).
And the general disregard for threatened and endangered species, as well as threatened and endangered World Heritage sites also makes me furious.
I’m angry that there are so many people who give their pets up for adoption for stupid reasons—the kitten grew up, the dog sheds and it doesn’t match the ouch, the puppy chews on things, etc. I wish there was a manual, so I could say RTFM!!! (Wouldn’t that be a useful handout for people interested in adopting a pet?)
Like @SuperMouse, it makes me angry that teachers get paid next to nothing, but perform a key role in forming the “leaders of tomorrow”. Similarly, it makes me very mad that liberal arts students, on average, make much less in their jobs than engineering/physics students. (I’m not mad at said students, but mad that jobs for LA students don’t pay well.)
And something (somewhat) petty: teachers (and other adults) who believe that they have the only “right” answer and no other answer is correct and will not listen to reason or change their opinion for anything. Also teachers outside of English classes who mark down for non-egregious word choice “errors” and subtle grammar “errors”.