Do you think someone who is racist, homophobic, transphobic etc can really change their ways?

Do you think someone who is phobic or racist in anyway can change who they are and how they think? Even if they were brought up that way?

Also would you respect that person if they truly changed? Even if they had said some insensitive or offensive things in the past?

Do you have any examples of people who have changed from being phobic or racist?