The US remained a tinderbox of anger and emotion as violent protests erupted for a sixth day across the country over the custodial killing of African-American George Floyd, resulting in the death of at least five people, the arrest of thousands and placing of curfew in nearly 40 cities, while forcing President Donald Trump to take shelter in a White House bunker.

Considered to be the worst ever civil unrest in the US in decades, the violent protests have engulfed at least 140 cities across America in the days following the death of Floyd, a 46-year-old man who was pinned to the ground in Minneapolis on Monday by a white cop who kneeled on his neck as he gasped for breath.