"A People's History of the United States"

In this section of "A People's History of the United States," many controversial points of the Constitution and government are discussed. However, everyone has their own perception of what they believe should be changed in the Constitution, or the U.S.'s government, especially those of different social classes and range of knowledge. As human nature, people usually want to have an advantage against others or be the "top dog." Because of this, it may be obvious that the wealthier class would like to create laws that are more beneficial for them, and the poorer/ middle class would like laws for their advantage. Thus, the Founding Fathers, and other political figures throughout history, would have to keep this in mind to satisfy the majority of the population. Even though the Constitution and Declaration of Independence were written long ago, I believe the Founding Fathers did a good job writing these documents because it is still apart of our government today. Although there are always the skeptical ones who argue that the Constitution violates a person's right(s), a great number of citizens have followed, and continue to follow these laws today.

Questions: Charles Beard was one of the historians the author mentioned in the reading. He criticized the Founding Fathers for writing the Constitution "to benefit groups the Founders represented, the 'economic interests they understood and felt in concrete, definite form through their own personal experience,'" though I wonder what class he is in? (since it may affect his belief about this).

Did these critics take in consideration that the Constitution has only been amended a few times throughout history?

Were there any riots or radical groups that wanted was so against the Constitution and wanted to get rid of it?