What was a major concern for the group known as the anti-federalists?

The group of American people whose aim was to create a strong U.S Federal Government was called Anti-Federalists. These people opposed orders issued by U.S Constitution. The major concern of Anti-Federalists group was that the power not divided equally among the three branches of Government by the Constitution. They had the sentiment that the interest of ordinary people was not taken care of and interest of Aristocratic elements (noble, high class people) in the society was represented by Federalists.