Police are investigating if the attack is linked to the Evening Post’s extensive coverage of the Bristol disturbances.
The Post has published several photos of suspects believed to be involved in Monday’s violence, in which a Cabot Circus jeweller was ransacked.
At the front of the four-storey block, windows were smashed and paint was thrown by vandals.
Staff at the newspaper are at work as normal, but a sign at the front of the building asks them to avoid using that entrance.
Paul Breeden, chair of Bristol NUJ, said: “The NUJ condemns any attack on journalists or the premises where they work. There is no justification for violence.
“If it emerges that the damage to the Post and Press building was connected to coverage of the riots, I hope that the law will take into account the importance of having a free press that is able to report on its community without persecution.
“Journalists from the Evening Post, from the BBC, from the website Bristol 247 and elsewhere have been reporting on the recent disturbances sometimes in very difficult circumstances.
“Without them people would not have a picture of the events that have shocked our city and the nation. Journalists deserve public support – there is never any justification for attacking them or the premises from which they work.”
Our report of Evening Post attack in bristol
Thursday night despite heavy police presence in the city centre and across Bristol we smashed all the front bottom windows and some of the higher ones at the Evening Post headquarters and decorated the front with paint bombs. The paper has estimated 20,000 pounds damage.
The media demonises those who choose to resist and fight back, opening the way for more repression again us all. They attempt to divert our attention away from the real everyday thugs and looters – the cops and capitalists, who routinely get away with large-scale theft and murder. This is part of the divisive strategy of rulers to get us fearing and fighting each other and taking sides with authority against rebels. This action was made by people who are not fooled. They do not understand our anger as an unstoppable force that will not be stopped by batons or bullets – we fight with all means for a future of complete liberty we have yet to know.
When the gloves come off and the social war has never been clearer, the class enemy reply on corporate media to be used as just another weapon against us all who want something better for our own lives and those yet to come.
Let’s see the bosses and politicians scrabble to be seen with brooms on the streets – it’s their mess come back to bite them, the lines are drawn: this is what Big fucked Society looks like.