“The way to resolve differences is through dialogue, not violence or criminality.”
First Minister Arlene Foster condemned the attack on Twitter, saying: “There is no justification for violence. It is wrong and should stop.”
SDLP MP Claire Hanna also criticised the attack, tweeting: “We’re told by the apologists that these protests & riots are borne of frustration about not being listened to, but an excellent photo journalist is attacked while trying to capture the story.”
Later on Wednesday night, the gates of the peace line on Lanark Way were opened, leading to clashes between loyalists and nationalists.
Social media footage captured petrol bombs being thrown from both sides of the wall.
Police are advising members of the public to avoid these areas.
“We would appeal to those with influence in the area to use it to help restore calm,” a PSNI statement said.
Videos circulating online show a bus being pelted with petrol bombs and having its windows smashed where a crowd of people had gathered.