My logic behind this - the people who plan/conduct these attacks get immense pleasure out of the terror they create amongst common man. This is what they seek to achieve and so when we use words like "Terrorism" and "Terrorist" we concede our fear about them. This should not be the case, we will play with them mentally. Let them not seek any mental pleasure as well...
I think it is high-time our media/newspapers/common man start referring to them as "Sadists" in English and "Buuzdils" in Hindi.
Cut to a situation when everyone refers to Ajmal Kasab as "Sadist Ajmal Kasab" or "Buzdil Ajmal Kasab"...