[ One side remark here is that...
[ One side remark here is that, just imagine that you and your brothers and sisters mourn for your father who has been martyred, and meanwhile some body jumps and accuses you of killing your father because you are mourning for him and based on his logic mourning is a sign of feeling guilty of murdering. What will be your reaction to such corrupted logic? I am really interested to hear from you.
] Now, let us go further and consider a religious leader who has spent his lifetime in learning the religion and teaching others the way one should live and explaining the Islamic duties and thoughts. If such person is martyred by the tyrannical rulers, then our commemoration will include a much wider aspect, since this man is no longer a father of an individual, but rather a father for all those who were benefiting from his knowledge and guidance.
Finally, if we consider the supreme level of the and his Ahlul-Bayt who were the best of mankind, the most knowledgeable, the most illustrious, the most god-fearing, the most pious, the best in personal virtues, and the most honored before Allah and the leaders for all the generations till the day of judgment, then one can comprehend that keeping their path alive is a DUTY upon us as their followers.
By commemorating the martyrdom of Imam Husain (AS), we learn lessons from his noble thoughts and convictions. Learning about what happened to him and his companions in the history will provide us a light for the future. Learning about his actions has inspiring effects on our actions as well. The other more puzzling thing is what happens during the celebration. Again I might be wrong and please correct me in a gentle way if I am.
Usually during this celebration, my Shia brothers start hitting themselves on the head (Is it at that time or am I wrong ?) until in some cases they faint or blood starts getting out of their heads. I have even seen (on TV) pictures of small children being hit or being made to hit themselves (I admit that those could be fabrications and out of context pictures but that's what I've seen and I am ready to be corrected). I ask my Shia brothers and sisters, is this the way to celebrate ?
Why do you hit yourselves ? I have never heard of small children being hit, nor have ever seen adults are being hit. What you pictured should be really an amazing ceremony. No my dear friend, there is no such silly actions.