What problem did Anti-Federalists have with the Constitution?

Anti-Federalists opposed the ratification of the 1787 U.S. Constitution because they feared that the new national government would be too powerful and thus threatens individual liberties, given the absence of the bill of rights.

under god i have placed my chiest strentgh and the safe guard to my loyal subjects

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.