Columbus Day has been a federal holiday since 1937, and here are some reasons why it probably shouldn't be. John Iadarola and Hannah Cranston discuss some shocking facts about Christopher Columbus. Don't forget guys, if you like this video please "Like," "Favorite," and "Share" it with your friends to show your support - it really helps us out! If there's something you'd like to see us discuss on the show, tweet us about it! See you tomorrow :) ***************************************************** Every day ThinkTank challenges preconceptions, exposes amazing new facts and discoveries, explores different perspectives, and inspires you to learn more about the world and the people around you. Feed your brain with new videos every day at 12pm Eastern/9am Pacific! SUBSCRIBE or you'll miss out! http://tinyurl.com/9o8kpf4 Keep up to date with John Iadarola and Hannah Cranston ON FACEBOOK: http://facebook.com/thinktankfeed HANNAH: http://facebook.com/hannahcranstonhost ON TWITTER: http: