Tokio Jokio is a cartoon that has never been released after its airing, and it is understandable, as it was a product of a time when animation companies were making such cartoons as propoganda since America entered World War II, and especially after Japan (who was our enemy at the time) attacked Pearl Harbor.
Taking the guise of a captured newsreel, it's easy to see why it would never fly in today's easily offended culture. The Asian characters are negative stereotypes, with the big teeth, closed eyes, and the broken English, as it shows a comedic attempt at how Japan is prepared in comedic ways (possibly to serve as a way to help soldiers back in the day with the stress of war). While it is politically incorrect, it should not be viewed by today's standards (or anyone who is below high school). While the characters are harmful stereotypes of Asians (especially now that WWII is long over, and Japan has long since become one of our country's allies), it is another piece of history and cannot and should not be ignored. It should be used as a talking point as to why this was allowed, and why it needs to be shown, no matter how many get offended, as those who do not learn from history are doomed to repeat it.