NEW: The government's terrorism tsar has called for a "moratorium" on pro-Palestine marches.
Jonathan Hall KC tells @TimesRadio: "It pains me to say this, but I think we may have reached a point where we need to have a moratorium on the sorts of marches that have been happening.
"It's clearly impossible at the moment for any of these pro-Palestine marches not to incubate within them some sort of anti-Semitic or demonising language."