This is the Guardian.

Today, why is the Labour Party turn nasty?

Have Labour and Conservatives entered a new era of gutter politics?

Conservatives have dismissed as vile and gutter politics.

This has got to politics, isn't it?

The advert starts with a question

that to most people in this country would seem rhetorical.

Do you think adults convicted of sexually assaulting children

should go to prison?

The answer given below it is confounding.

Rishi Suneck doesn't.

This is a message that the Labour Party

has been spreading on social media

and that's been viewed tens of millions of times.

That the current Conservative Prime Minister is so soft on crime

that he wants Peter Files to get away unpunished.

When Kirsta Amal was elected as Labour leader,

he said he'd never engage in these sorts of personal attacks.

They're not opposition for opposition,

say I'm not going to score party political points.

And yet, three years later,

Stammer's launched an ad campaign

...