Of course you remember Shane, Dale, and Lori. They were major characters. You’d remember Sophia too, for how long they spent looking for her. T-Dogg wasn’t central, though he was a regular. He didn’t have a character arc and only got a few moments here and there. The reason I brought up not noticing the white deaths as much is because, like I said, I can’t even remember how many members of Herschel’s family died.
Then there was Otis, the kid Rick saved after his leg was impaled, the army men killed by the Governor, the two bad dudes killed by Rick in the bar, Sophia’s dad whatever his name was, and so on. They easily outnumber nonwhite deaths. It’s just that there are so many less black castmembers, and only one who has been a main character (Michonne).
I'm just not keeping score of the characters' skin color.