In the Emperor’s New Clothes section of this site, we take a look at things that are generally accepted as fact or conventional wisdom, that are neither (like in the story).
Randall with xkcd.com tells it:
Meanwhile, the Oatmeal (Matthew) put together the best easy-to-read treatise on Columbus, based on Howard Zinn’s work, which dispels the “facts” in favour of realizing he & his men were murderers & thieves & child-rapists.
Read here: http://theoatmeal.com/comics/columbus_day
And no, we don’t need an American holiday in honour of this guy, or a Canadian province named after him (British Columbia.)