On Sunday, Black Lives Matter protesters in Bristol, UK, pulled down a statue of 17th-century slave trader Edward Colston and rolled it through the streets before dumping it, unceremoniously, into the River Avon.

Some applauded the move, while others decried what they called "mob rule."

With a colonial history spanning centuries -- and a mania for erecting statues in the 19th century -- Britain's towns and cities are dotted with monuments to figures like Colston.

For some, the statues have melted into the background of daily life, but many people are now questioning whether they should still stand on their pedestals.

Around the country, various local authorities have already started to act to remove statues or consider their future.

On Tuesday, the Mayor of London, Sadiq Khan, announced a commission to examine the future of landmarks around the UK capital, including murals, street art, street names and statues.