Committing a crime does not make one a terrorist. Bombing an abortion clinic should probably qualify you as a terrorist, but theft/vandalism/etc in the furtherance of a political goal is not terrorism. If we do want to redefine terrorism to be this broad, then we really need to reign in all of the extra powers that the government has to go after 'terrorists' because those powers are predicated on the idea that terrorists are using killing people to further their goals.