The Highgate Cemetry twitter account shared the photos of the damage on Saturday.
The tweet read: “Red paint this time, plus the marble tablet smashed up. Senseless. Stupid. Ignorant. Whatever you think about Marx’s legacy, this is not the way to make the point.”
Last week gardeners found vandals had damaged the monument perhaps beyond repair.
The damage was done by someone “hitting it repeatedly with a metal instrument,” the chief executive of the Friends of Highgate Cemetery Trust, Ian Dungavell told HuffPost UK.