...when he was a terrible human being?

There is a Columbus day?

Columbus Day is a U.S. holiday that commemorates the landing of Christopher Columbus in the New World on October 12, 1492. It was unofficially celebrated in a number of cities and states as early as the 18th century but did not become a federal holiday until the 1937. For many, the holiday is a way of both honoring Columbus’ achievements and celebrating Italian-American heritage. Throughout its history, Columbus Day and the man who inspired it have generated controversy, and many alternatives to the holiday have appeared in recent years.

http://www.history.com/topics/exploration/columbus-day

Quick question related to this:

Why is he credied as the discoverer of America when Native Americans were inhabiting the continent for ages?

This

TBH I didn't realise the trash he was until I did my research. The basic knowledge is that he discovered America when actually, it's a darker, ugly truth,

Also this

America has a bunch of terrible/sexist/racist/ect... days and just things in general they celebrate and they cover it up with "ITS TRADITION" and tell us not to complain.

For example,the NFL team called the red skins is OBVIOUSLY offensive to native americas but people will say shut up its only tradition.

Also the confederate flag is OBVIOUSLY racist being as their source of income was slaves and getting a confederate flag tattoo clearly means you support them but people say shut up it's tradition.

That's America, where we say shut up its tradition.

!!!

In school we're taught he was this amazing guy that didn't believe the world was flat and was going to prove it by sailing to India the other way and that's how he discovered the Americas. They failed to tell us that he was the ISIS of his time, committing genocide and wiping out entire nations, playing a huge role in the slave trade and was a rapist. He was basically John Ratcliffe from Pocahontas.

i agree

Leif Eriksson day>>>>>>

Because America is a terrible country full of racists.

The country is backwards.

the Vikings arrived 500 years earlier, and did a couple of small settlements on New Foundland. but they didn´t colonize it and never enslaved the natives.

White men. Bureaucrats of the past.

Girl the Vikings went around raping, burning and slaugering entire villages. Are you really trying to use them as a positive example?

Here he's considered the greatest thing, but I thought he was hated in all the american countries.