Educating Alice posted a story regarding the Holocaust and Shoelaces. This story is important enough to read in its entirety.
I want to add my 2 cents here. I agree that we must teach kids to think about hard topics in a rigorous manner. Collecting 6,000,000 centimeters of shoelaces tied together is symbolic drivel, an act not worthy of serious consideration, except that it interferes with children thinking hard about the whole issue of the Holocaust.
I am currently reading a very short (66 pages) book by Robert Eaglestone, Postmodernism and Holocaust Denial. Cambridge, UK. Icon Books (2001). Eaglestone makes a thoughtful argument in which he distinguishes between the modern, liberal discourse that, through fear of political incorrectness, continences free speech to the extreme and a postmodern view that insists on rigorous attention to the ethical value of the argument itself. The modern view allows for debate where there is no debate. It makes room for Holocaust denial because free speech requires that both sides be heard–even when there is no other side. The postmodern view, however, requires one to address the underlying ethics of the argument leaving little room for sweeping events under the rug as if they did not occur.
Collecting shoelaces is much like Holocaust denial because it trivializes the reality of the event. It is something like creating a virtual reality, like decaffeinated coffee or non-alcoholic beer, allowing for an experience without the malignancy of the event itself.