Three supporters of the group Take Back Power produced plastic bags of manure and tipped them out under the tree in The Ritz Hotel lobby on Wednesday.
They were swiftly escorted out by staff and removed from the premises.
The trio held placards outside the hotel reading: “INEQUALITY IS S**T” and “TAX THE RICH.”
The group say they are a new nonviolent civil-resistance group calling on the UK government to establish a permanent citizen’s assembly that has the power to tax extreme wealth.
Officers were called to reports of criminial damage at the hotel just after 12.15pm, Met Police said.
No arrests have been made, but an investigation is ongoing., they added.
Megan Howe