This definition only reinforces the parent's point. What it rules out as "not terrorism" is regular organized crime, which isn't too much into bombings anyway. Bombs are almost never used without a political/ideological agenda, because they're too expensive and require too much coordination to make, maintain and deploy.
You're wrong, all those WWII resistance fighters were by definition terrorists to germans/japanese. Its just that US marketing over-used the term in past decade and a half to label anybody inconvenient as a justified target for extermination because 'national security'
Except that to some extent, they do. When my country was occupied by the Nazi Germany, people who fought back were called freedom fighters by us. They were called terrorists by the Nazis.
