::Andrés, as soon as I have a free moment, I'll answer your questions on the Criticism talk page in detail.  But basically, yes, WP:BLP is strictly enforced on Wiki, and if we don't absolutely reference everything to the highest standards, Chávez supporters will quickly delete anything, even if we all know it's true. -)  Familiarize yourself with the ins and outs of the BLP link above, as well as WP:RS; they'll both help you make solid contributions.  More later on the Criticism talk page.