Isn’t it ironic…

Oh the irony of filtering….Two days ago I had a teacher email me regarding one of the databases that is paid for by our state library system. Our local filter blocked the database as spam. Today, I went to close a web browser window a student was on and found to my surprise that the site they were on was for South Park. Further investigation led me to see that not only could our students view videos from this site, but also get into the chat. Now explain me why a database would be blocked but not a South Park site? Am I being unrealistic?