At Tesla, Marcus Vaughn was called racial slurs by his manager and saw a fellow Black co-worker beaten with a chair.

After alerting human resources and Elon Musk, Vaughn was fired for “not having a positive attitude.”

He’s one of many Black workers filing legal action against Tesla. More than 100 employees say they’ve faced racism at the company, including repeated use of the n-word, demeaning assignments and barriers to promotions.

Tesla is now trying to delay Vaughn’s case through forced arbitration—even though Vaughn never signed an arbitration agreement.

Weeks ago, in a separate case, Tesla was ordered to pay $1 million to Melvin Berry after evidence showed that two of his supervisors had called him the n-word, then punished him with longer hours and harder work when he complained.

Watch our full report.