Formula One drivers all wore a black T-shirt with ``End Racism'' written on it before the start of the season-opening Austrian Grand Prix Sunday, but six of the 20 drivers did not take the knee. World champion Lewis Hamilton, the only black driver in F1, wore a T-shirt with Black Lives Matter on the front and End Racism on the back.
Hamilton has spoken widely about racism in recent weeks.
Valtteri Bottas won a chaotic season-opening Austrian Grand Prix on Sunday while Formula One champion Lewis Hamilton finished fourth after getting a late time penalty.
The race was interrupted three times by a safety car and nine of 20 drivers abandoned, including both Red Bulls of Max Verstappen and Alexander Albon - who tried to overtake Hamilton on the outside with 10 laps left, touched wheels and flew off track.
Hamilton was given a five-second time penalty for causing the collision, having earlier been hit with a three-place grid penalty after an incident in Saturday's qualifying was reviewed by stewards.
Although Bottas started from pole position and Hamilton from fifth, it looked like a straight fight between the two Mercedes drivers as has been the case so often in recent years.
with files from Associated Press