Under-fire West Ham co-chairman David Gold says threats and violent fan protests against football executives 'cannot be tolerated'.
He hit out after the home of Manchester United executive vice-chairman Ed Woodward was targeted by a group chanting that he was 'going to die'.
Gold and co-chairman David Sullivan were targeted when angry fans tried to attack the directors’ box during a home game with Burnley last season.
'I know exactly what Ed's experienced. I've experienced it four or five times myself,' he told the BBC.
'What you've got to understand is that it is by a minute percentage, a couple of hundred people.
'In my mind you've got a couple of hundred belligerents who want to, metaphorically, burn your house down. And those 200 will gather people who are listening, or walking by and wonder what it is all about.'
The Premier League announced on Thursday that fans who behave in an 'unacceptable' manner towards players, supporters, club employees or referees will face a ban from all 20 grounds.
'The league will come together as a unit to protect the likes of Ed and punish those perpetrators. It cannot be tolerated,' said Gold.
'Manchester United are a big club, Ed Woodward is a big figure in the game. He cannot be worried about his wife and children.
'The Burnley game was a terrible experience, I couldn’t tell you. My 10-year-old granddaughter said: 'Grandpa what do they mean? You’re not a liar are you grandpa?’ I mean, what do you say to a 10-year-old? It was dreadful.'
West Ham are bracing themselves for more fan protests this season.