I am no fan of Che, but when you speak of ignorant kids, I think you should also include their ignorance of Latin America in general. Lack of a Democratic process, wide-spread terrorism, abuse of human rights, and all too often, hunger and malnourishment are prevelent. There are many reasons for this - corrupt governments, the Columbian drug cartel, abuses by the United Fruit Company, AND US interference such as the CIA assasignation of Salvador Allende, the democratically elected president of Chile. Chile had the distinction of being the longest standing democracy in South America until the US decided to undermine the government there.
No, I am no fan of Che, but I consider him as much a symptom of a serious problem, as he was the cause.
I had the opportunity to spend 6 months in Brasil, and at the time I was there, government soldiers were dragging people off in the night and people were quite literally starving in the gutters. I am rather surprised no Che-like character showed up there.
It is important to see all sides of a question. Otherwise you run the risk of being considered as ignorant as those kids on Yahoo.