Final answer:
The two main mission elements of "Security Police" involve using intelligence services to detect and defeat external threats, and counterintelligence to protect against internal threats. In a broader sense, national security includes political and military security, reinforced by a variety of police forces at different governmental levels.
Step-by-step explanation:
The two main mission elements of "Security Police" are using intelligence services to defeat threats, and using counterintelligence services to protect the nation from internal threats. Intelligence services involve gathering information that is crucial for anticipating and preventing potential threats before they can affect the national security. Counterintelligence efforts focus on identifying and thwarting espionage and other activities conducted by foreign powers, organizations, or individuals aimed at secretly obtaining sensitive information or disrupting national policies. In the broader context, national security also encompasses political security and military security. Political security pertains to maintaining the stability of a nation's social order, engaging in diplomacy, and managing international relations. Military security involves the capability of a country to defend itself against external threats and exercise its policy objectives through military force if necessary.
Police forces, at various levels from local to federal, are instrumental in maintaining public order, enforcing laws, and preventing crime. They use a range of tools, such as K9 units, to achieve these objectives. At the federal level, various government agencies like the FBI and DHS operate with specific mandates. An example of a historically infamous security organization is the SS (Schutzstaffel), which started as a group of bodyguards and evolved into a prolific instrument of Nazi terror.