Lord Walney has hit out at Britain for not "cracking down on far-left groups" and said that the political extremists are "stepping into criminality."
This comes after activists from Youth Demand painted Labour headquarters red, claiming the party has "blood on their hands".
The group wrote on social media: "Labour has blood on their hands. They are complicit in the murder of Palestinians, and millions of people around the world, as they continue to drive genocide."
Speaking about the incident on GB News, former Labour MP Lord Walney said: "The level of criminal destruction is depressing. And I think we have to be careful as broadcasters, as politicians, as commentators, not to end up amplifying what is on. .
"On one level, pretty basic criminal damage. And I think there is a risk that we can talk about this in excited tones and say they're going to strike next and end up having GB News and other channel channels as essentially a microphone for this far-left group."
He added: "The move of what is essentially an environmental group into campaigning for Palestine shows firstly the level of interchange on the far left.
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"I think it shows a level of cynicism from these environmental campaigners who have been, I think, frustrated that their actions in blocking roads have not been getting the publicity that they hope that it would because of the dominance of the Gaza protests in recent months.
"That they have essentially moved on to that turf" GB News host Bev Turner said: "to piggyback that attention?"
Her co-host Andrew Pierce asked: "can they go too far? Is that what they've done today? Was it too much, too extreme?"
He agreed saying: "Absolutely. I think we need to be really firm as a country, at all levels and the political level.
"Whatever your strength of feeling about a cause, stepping into criminality and vandalism is not acceptable.
"We need more of a focus on how to change the law through the ballot box and be proud of the parliamentary democracy that they have.
"Not to buy into this fake far-left narrative which says, oh well, all democracy is is irredeemably corrupted, and therefore we've got to take matters into our own hands."
Sir Keir Starmer has faced criticism for his position on the Israel-Hamas conflict, being accused of not taking a tough enough line against Israel's actions.
The Labour Leader today reiterated calls for the Government to publish advice received on whether Israel is violating international humanitarian law in Gaza.
He said: “Yesterday was the six-month anniversary of this awful conflict, and we’ve seen the continual withholding of hostages, we’ve seen 33,000 people killed in this conflict, many of them women and children, so we need the conflict to end. We need that ceasefire.
“On the question of arms sales, there’s a legal test for when sales should be suspended.
“The Government’s got advice on that and so what the Government should do is to publish that legal advice, or at least a summary of it.
“They’ve published summaries before in response to the Houthi attacks, to publish that so we can all see it and that appropriate action can then be taken in relation to the sale of arms.”
