"Ministers float policies to generate headlines before checking if their ideas are even legal,” Labour's Lisa Nandy said.
"The Met's unwavering commitment to appalling optics is almost starting to seem deliberate."
The activists have attached slogans to Oleg Deripaska's £25 million home which read: "This property has been liberated."
"Russia has a better claim to own the Tory Party than to a single square foot of Ukraine."