If the boss was joking, she should have known better. Liberals cannot take a joke. As for the al-Qaida remark...well, read my tagline.
Threatening to kill someone is not a laughing mater, and it is against the law to kill someone. This is no different than a sexual predator intending to meet someone, even though he doesn't get any sex he is prosecuted as if he did. The same thing should go for death threats.
This is serious business, like Airport security, and just as airport security is not a laughing mater, neither are death threats, Mister.
You know, sometimes I hate adding a sarcasm tag...