== Categories? == 

 If there is to be a section for categories of attacks, then Islam-related attacks should be a category.  Better yet, the category should be titled Religiously Motivated Attacks.  This would cover Islam-related attacks, acts by the Jewish Defense League, women's center attacks, etc.   If Puerto Rican Nationalists rate a category, then the religious nuts should too.  Of course this list would include hate crimes against gays and would also swallow the KKK list as well.   
 Before you get all wound up, let me explain what i would rather see.  No categories, or categorize everything.   
 *If a person references this page to learn what attacks occurred in the 1970's, they should only need look at the section titled 1970's.  As it is now, there are 4 sections containing events occurring in that decade.  Eliminate the categories and list all by date.  Any categorized lists can be their own page if necessary, or a section of the article about the group performing the actions.   
 *Alternatively, it could all be categorized.  Religious incidents (sub-categorized by sect), environmentalist incidents, animal rights incidents, civil rights incidents, hate crimes (which would include acts by the KKK ... still religiously motivated, but most hate crimes are.), etc.  Assassinations would have their own category if they remain on this list. (For the record, I believe they shouldn't be here) The same for acts of unknown motivation. (If the investigating body doesn't know who or why, then either it is not a terrorist act or the terrorist group in question needs a new PR representative.  Terrorist groups claim their actions and attach calls for a change in policy to them, otherwise it is just a random act of violence.) 
 Personally, I'd prefer the first option. (but i still think political assassinations and acts of unknown motivation don't belong here.)