Some of the consequences if African Americans did not comply with the Jim Crow laws could be severe. If African Americans disobeyed Jim Crow laws could face fines, arrest, spent time in prison, aggression from white people and the police that sometimes could mean the death of the African American people.
One example could be the way African American people were treated during the Montgomery Bus Boycott of 1955-1956.
Let's remember that this Jim Crow law severely impacted the lives of black people in the South because this racist legislation denied access to quality education, restricted their right to vote, and African Americans had poor public facilities.
Positive thinking is an attitude that pushes you to expect good and desired results. Power of positivity helps you in creating and transforming energy into reality. Positive mindset helps you to seek happiness, health and a happy ending regardless of the situation. Lots of successful people have recognized the positivity as the key to success.
Out of all of them it makes the most sense, because he isn't showing pride. The grandpa isn't being rude about the situation but it also isn't showing a "bond" between them.