There's nothing wrong with removing the word "terrorist". It's a loaded word, and probably doesn't belong in the plain text of any article other than [[terrorism]] itself.
On the other hand, if a prominent figure or body has a relevant quote, and a user suppresses that quote for no other purpose than to eliminate the word "terrorist", then this is censorship and shouldn't be encouraged.
We can say:
* Clinton called the 9/11 hijackings "terrorism" and helped provide bi-partisan support for a military campaign to punish the "terrorists" responsible.
This way, it's not the Wikipedia which says that the hijackings or crashes or civilian deaths are acts of terror, but a particular, well-known spokesman for a large and influential group.
Ed Poor Ancient Wikipedian