Consider explicitation in translation below:

Protesters on the route to Westminster could also be heard chanting "Rishi Sunak, shame on you" and the slogan "from the river to the sea, Palestine will be free".

Earlier this week, Home Secretary Suella Braverman urged police chiefs to consider whether the slogan should be interpreted as an "expression of a violent desire to see Israel erased from the world", possibly making it a "racially aggravated" public order offence in some contexts.

https://www.bbc.com/news/uk-67110119