The authorities are still sifting through CCTV footage while the Hammers have vowed to ban up to 200 fans over the violence.
Boss Bilic said: “It does hurt, of course it does.
“The club didn’t deserve it, the players don’t deserve it definitely, the fans didn’t deserve it – the majority of them of course. The big majority, the vast majority.
“I have said enough, I want to talk about the game on Sunday. I have a big game. I said what I said and that’s it. I want to talk about football and the game.
“There is no point talking about it because I would only repeat what I said. I am a football manager, not a police officer.”
The Croatian has seen his fair share of crowd violence while managing in Russia and Turkey.
But he admits he is surprised that he is now seeing it in a country he once considered an “oasis” free from trouble.
“I’ve been in those environments before, unfortunately,” he said. “Whether that’s in Turkey, or even home, a few times even in Russia.
“But I didn’t expect it here to be fair. England was so far clear of it.
“You are one of the few that is an oasis that is still very good.
“It should be zero tolerance, there’s no such thing as overreacting.”
“I’m trying to bring that focus back on the team”
West Ham manager Slaven Bilic
Bilic’s team travel to Everton on Sunday chasing a fourth straight win in all competitions.
He added: “I’m trying to bring that focus back on the team.
“We are playing good at moment with three wins and now we have to build on that.
“We are positive, but we have an extremely difficult game on Sunday.”