Economics.
Economics can be both a tool of the internal and external subversive. For the external subversive, simply cutting off credit can cause severe economic problems for a country. An example of this is the United States' relations with Chile in the early 1970s. In an attempt to get Salvador Allende removed from office, the United States tried to weaken the Chilean economy. Chile received little foreign investments and the loss of credit prevented Chile from purchasing vital imports. Economic pressure of this kind prevents an economy from functioning and reduces a country's standard of living. If the reduction is too great, the people may become willing to support a change in the government's leadership. The main objective of economic pressures is to make it difficult for the country to fulfill its basic obligations to the citizenry either by cutting off trade or by depriving it of resources.
The internal subversive can also use economics to put pressure on the government through use of the strike. An example of this is the Chilean Truckers’ Strike during the 1970s. The strike prevented the transport of food staples and forced nearly 50% of the national economy to cease production. Activities of these kinds create human, economic, and political problems that, if not addressed, can challenge the competency of the government.
Agitation and civil unrest.
As defined by Laurence Beilenson, agitation is "subversive propaganda by action such as mass demonstrations or the political strike, that is, a strike not intended to benefit the union or workers in the ordinary sense, but intended instead against the government." Furthermore, propaganda and agitation, even when they are legal forms of freedom of speech, press, and assembly can still be classified as subversive activity. These tools further demonstrate the need to determine intent of those taking action to identify subversive activities.
Civil unrest creates many of the problems that an insurgency campaign does. First of all it is an affront to government authority, and if the government is unable to quell the unrest it leads to an erosion of state power. This loss of power stems from the people's lack of trust in the government to maintain law and order. In turn, the people begin to question whether or not new leadership is needed. Discrediting, disarming, and demoralizing the government is the goal of these activities and the cause of the government's loss of power. Civil unrest depletes resources as the government is forced to spend more money on additional police. Additionally, civil unrest may be used to provoke a response from the government. In the 1940s, during strikes against the Marshall Plan, communists in France would "deliberately provoke the police and gendarmerie into acts of repressive violence in order to exploit the resulting 'martyrs to the cause' for propaganda purposes." These martyrs and subsequent propaganda can be useful in turning political and social groups against each other. The less violent forms of unrest, "such as worker absenteeism, passive resistance, boycotts, and deliberate attempts to cripple government agencies by 'overloading the system' with false reports, can have powerfully disruptive effects, both economically and politically."