Nothing says bug-eyed clerical fanaticism more than inviting a hate-spewing Saudi cleric to address your religious revival meeting. But this is part of the under-reported history of the Reviving the Islamic Spirit (RIS) Convention, a conference that Justin Trudeau, a frontrunner in Canada's Liberal Party leadership race – and son of former Prime Minister Pierre Trudeau – will address this weekend in Toronto. It's also why moderate Muslims and non-Muslims are aghast at the prospect of Trudeau's presence legitimizing the conference and some of its notables. Although organizers pitch the gathering as "A Unique Youth Effort" "to help overcome new...