Larry Cable wrote:

Well, very recently ELF burned down one of the locations of Stock
Building Supply in New Mexico for using diesel forklifts that they felt
were producing too much pollutants.

This should be called political vandalism, not terrorism, because it's
not morally equivalent to e.g. a rush-hour train bombing in Madrid.
Terrorism has to kill people. That's my definition.

Do a web search on ELF and you will find that they claim responsiblity
for a lot of acts of distruction.

About a year ago, a GMC/Hummer dealership in SoCal was vandalized.
Some Hummers were burned, and "ELF" spray painted on the doors.
I told my mom is was probably a college prank. Indeed, when somebody
was later caught (using surveillance video) he turned out to be
a student at some nearby campus.