Max Verstappen, Charles Leclerc, Kimi Raikkonen, Carlos Sainz, Daniil Kvyat and Antonio Giovinazzi opted to stand when all 20 drivers backed the We Race As One initiative in Austria.
The demonstrations since have been ad hoc, which prompted Hamilton’s outburst in the wake of the Hungarian Grand Prix.
On Thursday, though, he praised Grosjean for changing his thinking on taking a knee following a constructive phone call.
“The fact is that when we got off the phone I knew we were united and we’re going to be working towards the same common goal,” said Hamilton. “That’s what all of us have got to do. Open up our minds. Don’t put our barriers up and be defensive.
“Acknowledging there’s an issue is sometimes the first step and then how can we work towards making it better.”
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