turn in one's grave

/T ER1 N IH0 N W AH0 N EH0 S G R EY0 V/
verb
  1. 1

    To be appalled, offended or disgusted by something, despite being deceased

    โ€œBeethoven is probably turning in his grave at the way that rock group mangled his Ninth Symphony.โ€

Source: https://en.wiktionary.org/wiki/turn%20in%20one's%20grave