Yes it is! In this world we all are human and lets treat eveyone in humanly manner.

Just becauase few people from a particular sect committed terror, it doesnt mean everyone are following it and we can call them by whatever name we want.

1) "The literal meaning of the word bastard is the circumstance of being born of parents who are not married to one another (see illegitimacy). The word is also used as a generic derogatory term for a male who is rather obnoxious or unpleasant (a derogatory word for an obnoxious or unpleasant female is bitch)."
Source:
http://en.wikipedia.org/wiki/Bastard

Further information:
http://en.wiktionary.org/wiki/bastard


2) "A Muslim (Arabic: مسلم) is an adherent of the religion of Islam. The feminine form of 'Muslim' is Muslimah (Arabic: مسلمة). Literally, the word means "one who submits to God)"."
Source:
http://en.wikipedia.org/wiki/Muslim


3) Saying "muslim bastard" wird generally be understood as an insult apllied to an adherent of Islam. It is discriminative against muslim. It is not racist (whether "bastard" nor "muslim" have something to do with "race")

Further information:
http://en.wikipedia.org/wiki/Racist

i am from uk, and a member of the BNP has just been cleared for slateing muslims because its not race hate. but i might suprise you and say im not a racist as well as a yank it was just a question i asked whicj was topical.