Ann Coulter, whose past statements have offended a wide range of groups, has been warned by a Canadian university where she will appear today that Canada has different views about free speech and hate speech than does the United States. Francois Houle, vice-president academic and provost at the University of Ottawa, sent an e-mail to Coulter that was obtained by The National Post.  "Our domestic laws, both provincial and federal, delineate freedom of expression (or "free speech") in a manner that is somewhat different than the approach taken in the United States. I therefore encourage you to educate yourself, if need be, as to what is acceptable in Canada and to do so before your planned visit here.... Promoting hatred against any identifiable group would not only be considered inappropriate, but could in fact lead to criminal charges.... I therefore ask you, while you are a guest on our campus, to weigh your words with respect and civility in mind." Coulter was not available for comment. But the Post noted that her targets have -- in addition to Muslims -- included Canadians. She once said that "they'd better hope the United States doesn't roll over one night and crush them. They are lucky we allow them to exist on the same continent."