Just don’t mention Israel, ever. In any context.
That’s all they have to do.
Is the situation right? No, absolutely not. But that’s the situation.
If they want to get anywhere near power i.e. in a position where they can actually do something about Palestine, they just have to keep shut in the mean time.
Share an article on twitter = instantly appears as if you are endorsing it.
If I was Starmer I would just put a blanket ban on all Labour MPs sharing 3rd party content online. Just keep it bland, pictures from your constituency, kissing babies, helping old folk across the road.
That’s all they have to do.
I hate Blair / Campbell because of the Iraq war, and the fact at the end of the day, Blair didn’t make the reforms that the country needed when he had the chance. But they knew how this all works.