Lewis Hamilton could 'take a knee' when Formula One returns to action in Austria in July.The six-time world champion is set to show his support for the Black Lives Matter campaign by making a public display at the Red Bull Ring next month.Hamilton, F1's only black driver ever, has posted messages on social media recently decrying the situation in the United States after George Floyd died on May 25 after a white police officer held him down by pressing a knee into his neck.The British driver said he felt "completely overcome with rage" and felt "so much anger, sadness and disbelief in what my eyes have seen".Among a series of Instagram posts, he included a picture of Martin Luther King praying on one knee at a civil rights march.Hamilton,.