Re: Karbala
Who told you that one cannot or the Shias do not commemorate the tragedy of Karbala apart from those particular dates? People establish Majaalis throughout the year and do commemorate the tragedy of Karbala. And your objection on weeping on a specefic date is quite illogical, certain dates carry particular memories with them, for example 14 August, Pakistanies celeberate thier independence, if this particular date is of no importance to you then why not to celebrate it on 16 December, the date when pakistani troops had surrendered to Indian army? Will this be a morale booster for the pakistanies? Certainly not! The bottom line is, that certain dates do have particular incidents attached to them and thus they are rememberred!
Apart from the discussion, If only Imam Hussian knew that his so-called followers will kill the spirit of Karbala and just make a day of incident he might have given it a 2nd thought.