The correct answer to this open question is the following.
As a society, we draw the boundaries when one person's pursuit of happiness infringes upon another individual's pursuit of happiness because as citizens, we must understand that there are limits to our own freedom and have to respect the rights of other people. By no means we have the right to step over the rights and property of other people because that is the cause of many conflicts as individuals and nations.
Our rights and liberties end when the rights and liberties of other people begin. We have to learn to live with many more people that have their own belief systems. That is why respect and tolerance are important concepts in our daily relationships.