Facebook has removed a number of Justice for George Floyd groups for exhibiting "inauthentic behaviour".
BBC News had highlighted some suspicious groups had switched their focus to call for justice for the black man killed in police custody.
Some, run by accounts seemingly based in Vietnam or Bangladesh, had posted misleading images.
And others had previously focused on coronavirus, 5G conspiracies and support for US President Donald Trump.
A Facebook spokesman said it had "removed the vast majority of them, for violating our policies".
Stoking tensions
There has been a surge in membership for Facebook groups supporting the Black Lives Matter movement, following the protests sparked by Mr Floyd's death, on 25 May.
But for some it is unclear what the motives of their administrators are.
In some cases, they could be exploiting the movement to gain followers and/or stoke tensions.
Some of the profiles based outside the US had frequently posted inflammatory images and videos before Facebook intervened.
One group, Justice for George Floyd, had almost 2,000 members.
Set up in March, it originally focused on the coronavirus but later that month switched to "US breaking news", featuring stories sympathetic to the US president, before turning to Black Lives Matter.
In its final incarnation, two administrators - identified as in Vietnam - had repeatedly shared posts critical of the protesters, including images of battered police cars that predate the current protests.
Another group, Justice For George Floyd & Latest Updates, was run by a profile claiming to be based in Bangladesh.
The administrator's profile photos had all been copied from other websites and included images of celebrities and animals.
And it used highly emotive language in contradictory posts that supported both the police and the protesters.
Others included:
- a group that changed its name from Join Donald Trump's 2020 Winning Team to Justice For George Floyd & Stopping The Riots
- a group first called Paranormal activity rebranded The Death Of George Floyd - Minneapolis
This would not be the first time Black Lives Matter groups have been hijacked.
Investigations into foreign interference during the 2016 US presidential election accused Russia of being behind a misinformation campaign that had taken advantage of the movement.
However, no evidence has been presented to indicate Moscow is involved this time.
Latest Stories
-
Today’s front pages: Friday, May 3, 2024
6 mins -
CAFCC: USM Alger file appeal at CAS to contest CAF’s decisions on RS Berkane jersey
55 mins -
Deloitte Ghana wins Africa ESG Company of the Year 2024
2 hours -
Medical Laboratory Professionals threaten to strike over conditions of service
5 hours -
Residents of Anloga, Keta express frustration over ECG billing
5 hours -
I don’t believe in praying in tongues – Strongman
5 hours -
‘After The floods’: VRA and GMet clash over cause of Akosombo Dam spillage disaster
5 hours -
‘After The Floods’: Victims suffer harsh conditions 6 months after Akosombo dam disaster
5 hours -
Akufo-Addo to unveil Otumfuo commemorative stamp
6 hours -
EduSpots distributes over 100 tablets and laptops to 30 community-led education spaces
6 hours -
Taxation is driving away investors – FABAG General Secretary
6 hours -
Effutu MP commissions office for Hepatitis B; absorbs cost of testing, vaccination and management
7 hours -
Bawumia pushes for land digitisation to tackle land guard menace
7 hours -
Faith-based institutions are instrumental in national development – Bawumia
7 hours -
Upholding the Integrity of Presidential Promises: A call to Ghanaian leaders
7 hours