University of California police want the public's help tracking down a suspect whose brutal alleged assault of a conservative activist on the Berkeley campus was caught on video. The campus police website said that two men on Tuesday approached a table where the activist was recruiting members to his group, and an argument ensued. The alleged victim, identified by Turning Point USA as Hayden Williams, held up his cell phone and began filming the two men who were allegedly harassing him. One of the two men knocked over the table, police said, and then punched Williams several times, causing injuries...