Hollywood — Mel Gibson is demanding that Michael Richards be blacklisted in Hollywood after the former “Seinfeld” actor unleashed a string of racial epithets during a stand-up routine. “As celebrities, we have to be particularly careful with our words,” said Gibson. “He should have his Jew lawyer issue an apology ASAP.” The 57-year-old actor-comedian, best known for playing Jerry Seinfeld’s eccentric neighbor Kramer on the hit TV show “Seinfeld,” was performing at the Laugh Factory in West Hollywood on Friday night when he went into the verbal rampage. Richards, responding to heckling from two black members of the audience, unleashed...