Firefighters were attacked by thugs throwing missiles as they attended an incident.
South Wales Fire and Rescue Service tweeted about the appalling incident which occurred in Newport.
They wrote: "After attending a recent incident in Newport, our Firefighters from Duffryn Station came under attack from a group throwing missiles, consisting of stones with a piece of tile attached.
"Please respect our emergency workers and be #WithUsNotAgainstUs."
The South Wales Fire Service is part of the With Us Not Against Us campaign which aimed to raise awareness about assaults on emergency workers.
More than 4,240 assaults were committed against emergency workers, including police, fire and ambulance crews, in the period April 2019 – November 2020, representing a monthly average increase from 202 in 2019 to 222 in 2020, or 10 per cent.
Assaults ranged from kicking, punching and headbutting, to spitting, slapping, biting and verbal abuse.
The campaign asks "the public to treat them with respect, and have the following plea – work with us, not against us".
Firefighters in Sunderland previously reported being attacked by children while on duty.
The crews reported being pelted with stones by "a large group of youths" after they raced to extinguish a fire - which had been started on purpose".
It was the third attack of its kind in just one week in 2020 - and marked the latest in a string of shocking attacks on emergency service workers.
"For the third time in a week, fire crews were attacked last night by a large group of youths," tweeted Chris Lowther, Tyne and Wear Fire and Rescue's chief fire officer.
