sentences:  He led a four-year campaign to reduce gratuitous TV violence aimed at children under 12.In November 1990, in the midst of the national unity crisis caused by the collapse of the Meech Lake Accord several months earlier, he took an eight-month leave from his duties at the CRTC at the request of Prime Minister Brian Mulroney to chair the Citizen's Forum on National Unity, known colloquially as the "Spicer Commission".This controversial mass consultation was "a dialogue and discussion with and among Canadians... to discuss the values and characteristics fundamental to the well-being of Canada."