Censorship for tourists

Want to go to Cuba? Wanna pick up an Hola magazine while you are there? Well you better bring your own. The Cuban authorities have prohibited the sale of magazines with content they consider, well, you know, counter revolutionary even in hotes. Magazines such as Hola and Popular Mechanics. Yeah, you don't want them tourist passing on the Popular Mechanics to the Cubans, lest they learn how to build something.