Culture, 100% is the reason. But I feel the real problem here is how we CANNOT talk about the negative effects of culture. Growing up black/Mexican I was made fun of by blacks and Mexicans for being smart, acting white etc. and I know I'm not the only one who experienced this.
Intelligence was not valued in black culture when I was growing up and I'd argue is still not.
It's a group of runners there to keep up the running pace, to block wind and generally add morale.
Over the duration of the attempt, runners will hop in and hop out of the run to keep the running pace alongside Kipchoge as well as block wind (a non-trivial factor) over 26.2 miles. Also, it is mentally boosting to have teammates and even competitors of his run along side him as he pushes his body and mind farther than he has ever had before.
How does one protect themselves, or loved ones? I feel this may come across as a silly question, but if escalation continues, I believe I won't be the only one asking this question.
Intelligence was not valued in black culture when I was growing up and I'd argue is still not.