I'm a white woman and have no trouble relating to Marcus. You know who I did have trouble with - Aiden fucking Pierce. He was just awful. Sorry Aiden, you got your niece killed and then put the rest of your family in danger. All you, buddy.
And I'm saying this as someone who had no trouble playing Trevor Phillips.
Can we just agree that Aiden Pearce is the worst videogame protagonist? I dislike him more than Kratos.