Slavery is illegal. Citizens have the right to free assembly. We worship our own God in this country. Someone paid for each of these, because it is true that freedom is not free. Any of the freedoms we have did not come cheaply.
Nothing is for free.
For example, in our country we vote each year for people in public office. We argue about if that person in office should be a democrat or a republican. Then, there is a peaceful transfer of power to the new official. Not only this, but we still question the person even after the person is in office. People are no longer murdered for their skin color.