OTTAWA—Security officials have scrubbed American right-winger Ann Coulter’s speech at the University of Ottawa after a boisterous protest prompted concerns for her safety. A spokesman for the group that organized the event said there were fears for Coulter’s well-being after about two thousand people gathered outside the venue to protest her presence there. Coulter is a darling of the U.S. right-wing who uses incendiary language to sell millions of books as well as her syndicated column. She sparked more controversy during a speech at University of Western Ontario Monday night when she told a 17-year-old Muslim student to “take a...