Well now, that's very interesting. I go there a fair amount and I've never seen anything like what you're describing. I've only seen friendly library folk.
On another note, public libraries are a haven for all sorts of people -- the unemployed who can use the computers for free to job hunt, the students doing research for school projects, senior citizens looking for information, children attending story hours, people of all kinds looking for books/magazines/DVDs, people attending special informational programs, people who may need a warm safe place to hang out for a bit (kids after school, seniors on a limited income with no heat, lonely people, etc.). And yes, believe it or not, I've even seen some whining complainers. Public libraries serve everyone because they are public.