On Feb. 15, a man hailed a cab at Sutter and Grant Street in San Francisco.
He got out in Daly City and refused to pay.
When the 60-year-old driver confronted him, the man began beating the driver.
Police say other people witnessed the attack, but did nothing to help.
Police described him as a Hispanic male, 25-35 years old, 5'7" to 5'9" with a medium build.