Redmond police on Monday arrested the second of two men accused of randomly assaulting a man in downtown Seattle in April. The two men, 27 and 29, are suspected of knocking a 77-year-old man to the ground near Third Avenue and Pine Street around 9:50 p.m. April 19 in an unprovoked attack, then casually walking away while the victim remained on the ground. The 77-year-old suffered a head injury, broken right arm and broken left knee, and he told police he didn’t know who hit him. Seattle police officers arrested a 29-year-old Bellevue man that night after a security guard pointed him out, according to King County Superior Court documents, but he was released from the King County Jail two days after the attack. He has since been charged with second-degree assault and a $200,000 warrant has been issued for his arrest.…