Norman's guilty, guilty, guilty BY SCOTT SHIFRELDAILY NEWS STAFF WRITER Saturday, February 24th, 2007 It was strike three yesterday for disgraced ex-Brooklyn Democratic Party leader Clarence Norman, as a third jury in 18 months found him guilty of corruption - this time for extorting a judicial candidate. The month-long trial included testimony from four judges, tales of last-minute election shakedowns and struck a blow to politics as usual, Brooklyn-style. "We were taking a creature that has been around politics for much too long and we have exposed it for the evil that it is," said Brooklyn District Attorney Charles Hynes....