Freedoms. The Anti-Federalists were scared that the federal gov would take those freedoms away so it was added to limit the gov.
First you have to understand what happened in March 5, 1770 a British soldier got in an argument with a colonist then the soldier struck him, people started to gather and then yell at the soldier call him names and then they started taunting him then other soldiers started shotting people in the crowd instantly 3 people died including a salior Crispus Attucks then two days later 2 more people die. My opinion on the topic is it was sad and tragic that it was all because of an argument that got five people shot and killed.