Tch. So some people can't take a joke, and complain because not everyone shares their views, and take every little joke as a personal affront against their beliefs. Boo-hoo, let's all give into their wants whenever something makes them uncomfortable, and make a big deal out of it while we're at it. Sounds fun.
And why would they make fun of Buddha, or any other religious symbol? The majority of religious people attending the school are probably Christian, so what would the point be to jab at other faiths that most of the students know little about?