Original sentence: American terrorism is a controversial political neologism.As an umbrella term it is used to negatively characterize a variety of alleged crimes perpetrated by the government of the USA or by its citizens.The term is rejected on a number of grounds, some of which involve disputes over the actual definition of terrorism
Edited sentence: American terrorism is a phrase used by critics of US foreign policy and ideological opponents of the United States to negatively characterize the conduct of various officials of influence in specific administrations of the United States government or their proxy agents during specific military or foreign campaigns