Conspiracy theories involving collective classes of people, such as race, ethnicity, or religion, are false, dangerous to freedom, and should be rejected. It is impossible for an entire population of people to engage in a conspiracy. An ethnic group can only be the victim of a conspiracy, hatched by an elite seeking to manipulate them to either turn over the reigns of power or to go to war. Ethnic groups are often used as scapegoats by conspirators who seek to either divert attention from themselves, shift the blame for their own actions, or mobilize the significant collective power of hate and prejudice to be used for their advantage. The Jewish conspiracy theories of the Nazi elite are a classic example of this principle in action.
Political conspiracy is any plan to deprive the citizenry of their natural sovereign rights.
The signature of conspiracy is when these plans are hatched in secret. Secrecy occurs when the conspirators realize that the citizenry would reject the plan if they were cognizant of it. This is the hallmark of arrogance. Our founding fathers understood that a corrupted cabal of men would work it's way into government and would conspire to take over the levers of power. This is why they devised a Constitution which divides power into three branches of government and recognizes the citizen as endowed by the creator with the right to life, liberty, and property.