Linesman Richard Nieuwenhuizen, 41, was attacked by the football players - mostly of Moroccan origin - while he was officiating at an under-17 match at Almere, near Amsterdam.
Nieuwenhuizen was kicked repeatedly by the youth players, who were 15 and 16 years old at the time, and the adult who had been on the sidelines. He collapsed hours after the match and was taken to hospital where he went into a coma and died the following day.
The incident was seized upon by the anti-Muslim party of Geert Wilders who said the death was "not a football problem, but a Moroccan problem".
The adult was jailed for six years and the minors received sentences of between 12 and 24 months' youth detention. An eighth suspect was acquitted.
The management of the team the footballers played for, Nieuw Sloten Amsterdam, said it was "deeply shocked" by what had happened and intended to ban for life any players responsible.
FEATURE"Without respect, no football": The reaction to the death
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