Three men have been convicted of causing violence and disorder at the Luton Carnival last year.
Fights broke out in St George's Square on Sunday 29 May, after the carnival had finished.
Four people were taken to hospital with stab wounds and several others were injured.
Nathan Kiasala, 20, and Jason Kiasala, 18, both from Luton, pleaded guilty to causing grievous bodily harm, possession of an offensive weapon, and violent disorder.
Daniel Idiabeta, 19, and also from Luton, was found guilty of violent disorder and possession of an offensive weapon.
They're due to be sentenced on 24 September.