Answer:
Because they were worried that the undemocratic institutions would in turn lead those in power to tyrannize the public
Explanation:
Antifederalists were sharply critical of the structure of the Senate, the executive, including that of the federal judiciary under the Constitution because they worried these undemocratic institutions would lead those in power to tyrannize the public because undemocratic institutions is the institutions that is been controlled by one person or a small number of people, rather than be controlled by all the people involve, hence leading those in power to tyrannize the public by exercising absolute power or control by either cruelly or oppressively.
Antifederalists were sharply critical of the structure of the Senate, the executive, and the federal judiciary under the Constitution because they thought that the Constitution gave too much power to the federal government and too little to individual states.
As the name suggest they were against this notion of federalism. Federalism is the division of power between two governments within a territory. Antifederalists believe that because of Federal form of goverment, the power structure will be divided into unequal terms, making some people weak while making some powerful.
They goes to the extent to call federal government against the right of the people as defined in bill of rights.
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