HBO’s Bill Maher used the N-word during Friday night’s episode of Real Time. He was interviewing Nebraska Republican Senator Ben Sasse. He spoke about adults in California dressing up for Halloween. Sasse said it’s frowned upon in his state and invited Maher to go there. That’s when Maher used the racial slur. He quickly told the audience it was a joke, but it didn’t stop the backlash on social media. Here is a clip of Maher using the word on the show…