From a few years back:
Yom HaShoah's Uncertain Future
I've been thinking a lot about this lately. On the one hand, "never forget" is an important Jewish holiday, and this is definitely an event of sufficient magnitude to warrant permanent specific mention. On the other, why can't we roll this into one of the many other "They Tried To Kill Us, We Survived" holidays? Is adding a new and wholly depressing holiday any more or less reasonable than expanding the meaning of, for example, Passover? Or making Tish B'Av last an extra day?