Innocents to the Slaughter

When President Obama had a press conference to speak on the Boston bombings, he used the weasel word "innocent":
“Anytime bombs are used to target innocent civilians it is an act of terror.”

If targeting civilians is immoral, why use the qualifier "innocent"?
More striking, reading his words does not convey his stumbling over the word "innocent."
It is worth watching here:
http://www.guardian.co.uk/world/video/2013/apr/16/boston-marathon-bombings-obama-terror-video

This is why he can still be good friends with Weather Underground bomber Bill Ayers and not consider him a terrorist, because Ayers was targeting the "military/industrial complex"--any bystanders were collatoral damage and probably deserved what they got by associating with military personnel.
"Palestinians" and Arabs do not target "innocent civilians", because any "zionist" is an occupier and considered a combatant.
The University of Colorado professor, "Walking Eagle" called the fatalities in the World Trade Center "little Eichmans" and therefore legitimate targets.
Jihadists can justify killing unbelievers, since infidels are not "innocent" civilians.
Obama is using the same language of our enemies -- and doesn't think anyone will notice.