I still think the comparison is not valid for many reasons. Canada adopted the War Measurements Act in 1914 which allowed the government to govern by decree when it perceived the existence of "war, invasion or insurrection, real or apprehended". Canadians of German and Japanese descent ended up in jail, lost their civil rights and properties. This was, however, a temporary issue in the context of two major world wars. Their Civil rights were reinstated, in many cases they were compensated and received formal apologies from the government after the conflicts were over. I think that although there was and element of racism here, the terms "xenophobia" and "chauvinism" better describe what really happened, al least in Canada.
Paula Deens remarks are obviously racist, however Freedom of Speech is of the fundamental rights of a free society. I am not by any means justifying what she said or why she said it, but she did not commit a crime. Racism is not by itself a crime, it becomes a crime when people start acting on it. We cannot legislate morality, but we can prosecute those who engage in practices such as racial or institutional discrimination.