The posters, which children, elderly women and other civilians believed to have been dragged from their homes in Israel amid this weekend’s surprise attack by the militants, have appeared in several locations around the capital.
Israeli authorities have confirmed the identities of 97 kidnap victims, but many more are unaccounted for.
They include a baby Ariel, her brother Kfir and their mother Shiri Silberman-Bibas, who were filmed being manhandled by Hamas fighters after the Nir Oz kibbutz was ransacked and set ablaze.
Two women have since been filmed ripping the posters from walls outside Mornington Crescent Tube station in north-west London.
An onlooker is heard challenging them, asking: ‘Why don’t you do something for Palestine?’
One of the women turns around and replies: ‘This is for Palestine!’.
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A British-Israeli woman who filmed the incident said she was verbally abused and intimidated by passers-by while she and her mother put the posters up.
Neta Fibeesh caught a last-minute flight from Tel Aviv to London on Saturday and has since witnessed renewed hatred towards Jewish people in the UK.
She told MailOnline: ‘I feel safer in the UK because it’s not a warzone, but it is still really unpleasant here. It’s just really upsetting.
‘I know a lot of people who are scared about being Jewish now in the UK.
‘One of my friends is more religious than me, he wears a kippah and has been walking around for several days with a hat, and my dad saw someone wearing a kippah get sworn at.’
Rishi Sunak has called on police chiefs to clamp down on incidents of antisemitism.
Two Jewish schools closed this week and will only tentatively reopen on Monday amid tensions.
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