Jacob Rees-Mogg has been caught in the middle of a scuffle at a university campus.
Video footage posted to social media captured the scenes at the University of the West of England, in Bristol.
The Tory MP for North East Somerset appears to step in to separate rivals as onlookers call for them stop.
Mr Rees-Mogg, who has been tipped as his party’s next leader, had been speaking at the University’s Politics and International Relations Society.
A post advertising the event on the group’s Facebook page said: “This will be a chance to talk to an experienced parliamentarian about the issues of the day, what it’s like to be an MP and how you can get there, or perhaps how exactly one pronounces ‘Floccinaucinihilipilification’.”
The society declined to comment on the incident. The MP’s spokesman has been contacted for comment.
BBC Somerset reporter James Craig told the broadcaster: “Just a few minutes after he started speaking, a group of protesters came into the back of the lecture theatre and started shouting anti-Conservative rhetoric at Jacob-Rees Mogg very loudly, a group of them, and sort of trying to shout him down, basically.
“But rather than halting the event, or ignoring them, Mr Rees-Mogg approached them and walked up to the back of the theatre where they were and tried to talk them down.
“But at that point various other members of the audience got involved as well and that’s when this scuffle… happened and a lot of people got involved.
“It looked to me like Jacob Rees-Mogg himself got pushed and shoved, although he insists he wasn’t.
“But it was a really aggressive and unexpected scene.”
Mr Rees-Mogg’s fellow MPs went on Twitter to offer him their support and condemn the protesters’ behaviour.
Conservative MP Conor Burns wrote: “Free speech is the corner stone of a free society.
“That and exchange of ideas should thrive on any University campus. What was done to @Jacob_Rees_Mogg today by masked moronic hoodlums was an attempt to silence free speech and should be condemned by all in politics.”
Labour’s Angela Rayner posted: “My politics are not those of @Jacob_Rees_Mogg however l utterly condemn the behaviour of those tonight who tried to attack him whilst he was due to speak at an event he was invited to.
“It’s extremely intimidating for any MP who travels alone to an event to be treated like this.”