The party said the attack took place “following numerous death threats resulting from his activism.”
London Metropolitan Police responded to reports of gunfire in south-east London around 3 a.m. local time on Sunday morning, she said in a statement.
Police said paramedics transported a gunshot wounded 27-year-old woman to a south London hospital and the incident appeared to have happened near a house party in Southwark.
The police statement said that at this early stage of the investigation there was no evidence to suggest a targeted attack or that the woman “had received credible threats against her prior to this incident”.
Detectives from the Met’s Specialist Crime Command (Trident) are investigating and seeking to speak to anyone who was at the party in London’s Consort Road area, he added.
“A dedicated team of detectives are working tirelessly to identify the person (s) responsible for this shooting,” Chief Inspector Jim Tele said. He added that “they need the public’s help” and urged people to come forward if they witnessed or heard any information about the incident.
Tele added that while acknowledging that the incident “will have shocked members of the local community and beyond”, he called on the public to “avoid speculating on the motive or the circumstances behind it”.
Johnson rose to prominence last year at the Black Lives Matter protests, as the leader of TTIP, which has been called “Britain’s first black-led political party.”
She is a mother of three and also works to deliver food and groceries to families in need, according to the party, which called her “a strong and powerful voice for our people and our community” in its Sunday statement.
At a vigil hosted by Black Lives Matter UK on Monday evening outside Kings’ College Hospital in south London, supporters and other activists huddled under a bandstand and joined in loud chants of support and prayer, accompanied by drums and movements.
“Every time she grabbed the microphone, she spoke the truth,” one supporter said at the vigil. “We have to make enough noise so that she can wake up,” added the supporter, greeted by cheers from the crowd.
Leo Muhammad told CNN that Johnson is a “warrior, a young sister who has been placed at the forefront of the fight for justice in the UK”.
Muhammad, a friend of Johnson’s, said that although the facts of the shooting were still being established, “whether he was targeted or [whether] she was in the wrong place at the wrong time, the point is, nobody is spraying bullets in white communities, but it happens regularly in the black community. We should be very concerned about this kind of activity. “
Activist Caul Grant told CNN he was “absolutely devastated” to learn what happened to Johnson, saying that although he had only known Johnson for about a year, she had had a “huge impact” on his youthful life in the community.
“No justice, no peace,” chanted the crowd.
Earlier Monday, Black Lives Matter UK hailed Johnson as “a young mother and fearless political activist who was at the forefront of many BLM protests last summer,” in a Twitter post.
Several British lawmakers also paid tribute to the dedicated activist in the aftermath of the shooting.
“Anyone who carried out this terrible shooting on Sasha Johnson must be caught quickly. Give all information you have to @MPSSouthwark. Reported death threats will need to be investigated,” wrote Harriet Harman, Labor MP for Camberwell and Peckham, who also wished Johnson a “full recovery”.
Diane Abbott, Labor MP for Hackney North and Stoke Newington, tweeted: “No one should have to pay with his life for standing up for racial justice.
David Lammy, Labor MP for Tottenham, called the news “heartbreaking” and said he “prayed for Sasha Johnson, her family and friends for a quick and full recovery”.
Claudia Webbe, an MP for Leicester East, shared her ‘love and solidarity’ with Johnson’s family and friends after the incident.
Webbe said the news of the shooting was “shocking” and “all women should be safe on our streets” in a tweet.
“When I think of the brutal shooting of Sasha Johnson, it reminds me that the culture of gun violence is all-consuming and affects entire communities and neighborhoods. The ball does not discriminate in its effect. But too many women become collateral damage in this culture. out of fear, ”Webbe said in a separate tweet.
An earlier version of this story incorrectly listed Sasha Johnson’s number of children.
CNN’s Niamh Kennedy contributed to this report from Dublin, Ireland, while James Briggs contributed from London.