David Delgado, 32, was arrested at his Winnetka home on suspicion of robbery and battery with serious injury in the Sept. 2 attack, Hermosa Beach police said in a news release. The attack occurred around 6:40 p.m. Sept. 2 inside Tower 12 at 53 Pier Ave., said Sgt. Robert Higgins. Officers say Delgado approached the victim as he was using the restroom in the beachside eatery. The writing on the victim’s red cap was actually in Russian, but translated to President Trump’s 2016 campaign slogan,