Which of these is a statement of opinion?

The U.S. government tried to force Indigenous people to forget their languages and traditions.
The U.S. government should officially replace Columbus Day with Indigenous Peoples' Day.
There are more than 550 Indigenous nations in the U.S. today, represented by 5 million people.
There are 12 states in the U.S. today that have made Indigenous Peoples' Day an official holiday.

The U.S. government should officially replace Columbus Day with Indigenous Peoples' Day.