Roske then boarded a plane and flew across the country with the intent to assassinate Supreme Court Justice Brett Kavanaugh and three other conservative justices. Calling yourself Sophie doesn’t erase the fact that you planned to assassinate a Supreme Court justice. NewsNation is calling Nicholas Roske, the man who plead guilty to an assassination attempt on Kavanaugh, SOPHIE ROSKE. He decided he was “Sophie” after trying to kill a Supreme Court justice. He is an adult male who planned to assassinate a Supreme Court justice because he did not like a court decision.