Why did Quinton de Kock walk out of T20?

According to a South African cricket writer, Quinton de Kock's refusal to take a knee before the T20 World Cup match against West Indies was due to his belief that it is a "token gesture." De Kock resigned from the South African team because the game's regulatory body in that country ordered the players to take a knee.

Prior to South Africa's match against Australia on Saturday, some players stood with their hands behind their backs, while others knelt with a fist in the air, and a third group stood with a raised fist. While diversity can and should be expressed in many aspects of daily life, the board felt that this did not apply when it came to taking a position against racism. De Kock's deeds outside of the game, according to Zama, prove that he is concerned about equality.