>> Because Islamic extremists are the only people that use

>> guerrilla tactics and explosive devices to get their point

>> across?

  Until July 1997, the IRA carried out several bombing and 
  shooting attacks. These included the Docklands bombing 
  and the Manchester bombing, which together killed 2 
  civilians, injured 212 more and caused around £500 
  million in damage.

http://en.wikipedia.org/wiki/Provisional_Irish_Republican_Ar...

  The Oklahoma City bombing was a bomb attack on the Alfred 
  P. Murrah Federal Building in downtown Oklahoma City on 
  April 19, 1995.

http://en.wikipedia.org/wiki/Oklahoma_City_bombing

sigh.