Singer Adele's joy at the arrival of her first child in October was soured by Twitter trolls within hours of reports emerging that she had given birth to a son.
The 24-year-old was targeted by abusive messages, including one urging her to "just murder it already". The offending account was later deleted. No action was taken.
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The 29-year-old PR manager, who had appeared on Come Dine With Me, was killed days before leaving for a two-month trip to the US.
The Square has won the top prize of Palme d'Or at the Cannes Film Festival.
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