The phrase "activist from a" is correct and usable in written English.
It can be used when specifying the origin or affiliation of an activist, often followed by a location, organization, or cause.
Example: "She is an activist from a small town in the Midwest, advocating for environmental protection."
Alternatives: "activist hailing from" or "activist associated with".
Grieve was a Conservative activist from a young age and is the son of a former Tory MP.
As a women's rights activist from a war-stricken country, Colombia, I know that the effects of sexual violence are long-lasting, complex and numerous.
The second attacker was said to be Musa Arafat, 23, a Popular Front activist from a village near Khan Yunis in the south of the strip.
One activist, from a group organising a picket of officials' mansions, read an appeal asking for the resistance movement to choose one leader.
Before it could reach the hub of Cairo's bygone uprising, Shaimaa el-Sabbagh, a 32-year-old activist from a new left-wing party, had been fatally shot in the back with birdshot.
A black former environmental activist from a poor background, she served as Lula's environment minister from 2003 until 2008, when she quit over ungreen policies pursued by others in the cabinet.
Another recipient was an activist from Iraq — a country that was dropped from a list of seven Muslim-majority countries affected by the original executive order".
The speech was by a German activist from "120db", a GI offshoot that is an opportunistic attempt to use the #MeToo movement to hate on refugees.
This year's crop includes a civil rights activist from Armenia, a terrorism-finance expert from Bangladesh and a Croatian lawyer with a win over Roger Federer.
Naher Hattar, a political activist from Jayeen, a new coalition of leftists, unionists and retired generals who organized the first protest on Jan . 7 said, "The main demand now was to go back to the 1952 constitution.
Perhaps the clearest images of the helicopter plummeting down were posted by an activist from Saqba, an area about 20 minutes from central Damascus which reportedly slipped from government control some months ago.
