"Dave bought a new car to make the demonstration with," Kearns says. "And that car was Henry Ford's favorite color-black."

“戴夫买了辆新车做展示，”卡恩斯说，“并且是亨利·福特最喜欢的颜色——黑色。”

youdao

Hamilton, who became the youngest driver to win the Formula One world title this year, will also perform a demonstration run in his McLaren F1 car.

BBC: Hamilton to race Hoy at Wembley

Samantha Rigg-David, the sister of Sean Rigg, a 40-year-old man who died in police custody in 2008 in Brixton, and Alastair Morgan, whose brother Daniel - a private detective - was found with an axe in his head in a south London pub's car park in 1987, took part in the demonstration.

BBC: Protesters call to replace IPCC