Bill Maher threw rapper “Killer Mike” a softball. Who was Mike — real name Michael Santiago Render — supporting for president? Presumably Maher figured the answer was easy, given Render’s political activism, which includes opposition to what he sees as systematic racism and police brutality. Maher pitched, and Render gave an answer. Except it was sort of a non-answer worthy of a deft politician. “My feeling is — pick your policy, not your person,” Render responded, as the Maher audience applauded, no doubt anticipating an endorsement of Joe Biden over Mr. Personality himself — that larger-…