African-American George Floyd's death on May 25 has sparked civil unrest that has since spread nationwide.
Chanting "hands up, don't shoot" and "no justice, no peace", the crowd, estimated to be over 60,000, along with 16 members of Floyd's family, some of whom flew down to Houston, marched about a mile from Discovery Green Park to City Hall under the scorching sun.
"The granting of the Freedom of the City of London recognises how they have added their voices to the growing global movement to stamp out racism."
Floyd's death has triggered nationwide violent protests with a section of the protesters resorting to looting and rioting across the country, leaving behind a trail of destruction.
People were seen breaking into high end stores around Manhattan's Madison Avenue and Fifth Avenue, home to almost all luxury and high-end brands from around the world, and running way with merchandise from the shops. Groups of people also looted pharmacies, electronic stores and other businesses across the city.
Floyd's death has sparked nationwide violent protests with some protesters resorting to looting and rioting across the country, leaving behind a trail of destruction.
Floyd died in Minneapolis on Monday after a white police officer pinned him to the ground. Video footage showed the officer kneeling on Floyd's neck as he gasped for breath. His death has triggered nationwide protests.