Complex sentence: The following quotes are from Congressman Ron Dellums (California) ad-hoc (i.e. not endorsed by Congress) 1971 hearings, which were "organized by Citizens' Commission of Inquiry on US War Crimes (CCI)".
Split into simpler sentences: The following quotes are from 1971 ad-hoc (i.e. not endorsed by Congress) hearings sponsored by Congressman Ron Dellums (California). The hearings were "organized by Citizens' Commission of Inquiry on US War Crimes (CCI)".