World´s Worst Tourists

Is there any ideal tourist? 

How are tourists supposed to behave?

Should tourists be trained according to the country they are going to visit?

These are questions that came to my mind this morning after reading an article on the China Daily newspaper as I am living now in Beijing. According to a world classification of the worst badly behaved tourists, US tourists rank number 1 followed by Chinese tourists. Obviously this is a very questionable assertion but I thought it could be interesting to read the two online journals (Daily Mail, China Daily) in which this piece of news appears. 

Note: Please refrain from commenting on stereotypes or prejudices. Thanks.