"This is far more than a semantic question. Whether something is or is not “terrorism” has very substantial political implications, and very significant legal consequences as well. The word “terrorism” is, at this point, one of the most potent in our political lexicon: it single-handedly ends debates, ratchets up fear levels, and justifies almost anything the government wants to do in its name. It’s hard not to suspect that the only thing distinguishing the Boston attack from Tucson, Aurora, Sandy Hook and Columbine (to say nothing of the US “shock and awe” attack on Baghdad and the mass killings in Fallujah) is that the accused Boston attackers are Muslim and the other perpetrators are not. As usual, what terrorism really means in American discourse - its operational meaning - is: violence by Muslims against Americans and their allies."