The white teenager who gunned down 10 people in a hate-fueled Buffalo supermarket massacre in a predominantly black neighborhood pleaded guilty Monday to murder and hate-motivated terrorism charges. Payton Gendron, 19, entered the plea at the Erie County Court — just two miles from where he massacred his victims on May 14 as part of a crazed plan to take out as many black people as possible. His plea to the string of state charges guarantees he will spend the rest of his life in prison. He still faces federal charges. Genrdon livestreamed the attack at the Tops Friendly Market...