Ugh. Things like this frustrate me. It's activists like PETA that make it difficult for vegetarians and animal rights activists to be taken seriously, we all get tarred with the same brush. PETA are going too far and they're now working against themselves by just becoming an object of ridicule. They need to look at threads like this to see just what their 'campaigns' are actually achieving.
As for their issue with people killing rats, I've been burning elk to death in Skyrim, shooting foxes with arrows, electrocuting mudcrabs...I'm a vegetarian, shop cruelty-free, I don't engage in any animal abuse, I love animals. Their arguments are just ridiculous.
Sad thing is, people like you are in the minority. I will admit, subtle people like you don't come to mind because you act like a sane human being. PETA people do the most bizzare pants on head insane things to seek attention. Ultimately, when an average person meets someone who's a vegetarian and doesnt support animal abuse you'll likely hear people think ' 'Oh god if this dude/chick goes on a protest X because its cruel' tirade, I'm killing myself.'
The problem is that the idiot with the microphone is more often seen as the voice and face of a cause than the calm, collected, and well spoken debatist.