This is what it looks like when society starts to change.

(Detroit Free Press) When Rosa Parks refused to get up, an entire race of people began to stand up for their rights as human beings.

It was a simple act that took extraordinary courage in Montgomery, Ala., in 1955. It was a place where black people had no rights white people had to respect. It was a time when racial discrimination was so common, many blacks never questioned it.

At least not out loud.

But then came Rosa Parks.

This mild-mannered black woman refused to give up her seat on a city bus so a white man could sit down.

Jim Crow laws had met their match.

Parks’ refusal infused 50,000 blacks in Montgomery with the will to walk rather than risk daily humiliation on the city’s buses.

This gentle giant, whose quietness belied her toughness, became the catalyst for a movement that broke the back of legalized segregation in the United States, gave rise to the astounding leadership of Dr. Martin Luther King Jr., and inspired fighters for freedom and justice throughout the world.

Parks, the beloved mother of the civil rights movement, is dead, a family member confirmed late Monday.

Let none of us ever forget that sometimes all it takes to change the world is for one brave person to stand up and demand that it change.