In the text "Go means Go," the response of Junior's parents helps develop the idea that racism has affected everyone on the reservation.
We can see here that the textual evidence to support this:
In the story, Junior's parents advise him to leave the reservation and go to a better school in Reardan. This suggests that they recognize the limitations and lack of opportunities on the reservation due to the effects of racism.
Also, Junior's parents explain that they want him to have a chance at a better life and not be trapped by the cycle of poverty and discrimination that exists on the reservation. This indicates that they are aware of the negative impact of racism on their community.