Four jailed after Adelaide man bashed to death over fence urination

Four men who savagely bashed and stabbed a father of three to death in an Adelaide laneway have been jailed for at least 20 years.

A Supreme Court jury found Joshua Betts, 21, Johnas Jerome Presley, 20, Everard Miller, 28 and Wayne Smith, 22, guilty of murdering 49-year-old Clifford Hall in Elizabeth Park in December 2012.

Justice Tim Stanley described the bashing as a "grossly disproportionate" response to an earlier altercation, in which Hall racially abused Betts after he urinated on a fence.

He sentenced each of the men to life imprisonment with a non-parole period of 20 years.