Prince Heinrich XIII of Reuss, the central figure in a mammoth series of trials of extremists who allegedly plotted to topple the German state, testified in court in Frankfurt for the first time on Friday. “Naturally, I reject violence, but the charge is attempting to accuse me of the opposite,” the 72-year-old told the court, showing signs of emotional distress and wiping away tears during his two-hour testimony. Prince Reuss, a descendent of a noble family whose princely title carries no formal weight, told of the “rape of his psyche and soul” by teachers during his time at school, with one …