I love humor but leader/managers need to be careful how they use humor. Humor can cause problems when it offends someone. Humor must never be sexual, racial, or harassing. Usually, it is best to leave the humor up to the most senior person present. Never forward or circulate humor/jokes on organizational e-mail networks.
Notice the part about leaving humor to the senior person present. In the Zimmerman trial, that would be the judge. Mr. West should let the judge set the tone for humor. I am willing to bet that the judge did not tell any jokes and that the judge did not laugh at West’s knock-knock joke. Any takers? Mr. West was way out of line.