Mark Zuckerberg, why did you kill a Bison for dinner?

Yesterday I read an article about Mark Zuckerberg that said he killed a Bison for dinner and ate from it, so now it´s clear why Facebook never blocks animal hate pages or hunter pages there, we want to know why Mr. Zuckerberg did this, nothing justifies such cruelty, even a meat eater doesn´t need to hunt and kill a Bison!!! http://www.ibtimes.com/facebooks-mark-zuckerberg-hunts-kills-bison-319648