In truth, any wizard present with half a brain could easily see that Kingsley was deliberately pinning this matter on the goblins.
The attackers were no goblins at all, but that band of mad Avengers led by Nelson.
As for why Kingsley had pointed the finger at the goblins, anyone with even a little political sensitivity could easily guess the reason.
Those lunatics with Nelson had never intended to survive the night. Once they were all dead, even as Minister of Magic, Kingsley could not seek revenge on the dead.
Yes, most wizards had heard what Nelson and his people intended to do! (They had not particularly tried to hide it.) Though most wizards disagreed with Nelson's extreme ideas deep down, they had no way of stopping them.
There was never any shortage of people who liked to talk big.
Talking about it and actually doing it were two entirely different things.
Before tonight, how many wizards had believed that Nelson's group would truly dare risk their lives to retaliate against the Death Eater Remnants? Even now that it had happened, most people would merely offer a few verbal condemnations rather than risk their lives trying to stop their mad slaughter of Death Eaters.
No one wanted to become collateral damage.
Most importantly, it would sound terrible if the truth came out.
It was because Kingsley had "betrayed" Nelson and his people that tonight's inferno had happened.
Otherwise, even blinded by hatred, the Avengers would only have hunted down the Death Eater Remnants.
After enduring two brutal Wizarding Wars, wizards had very little sympathy for Death Eaters. Even if they did, it mostly remained empty words.
Most people would rather see those Death Eater scourges dead. Even those who had not personally suffered because of Death Eaters still hated Voldemort