Mr Ayuba Wabba, NLC president, made the condemnation in a statement on Friday in Abuja.
According to Wabba, the conflicts have led to multiple deaths officially put at 55 at Kasuwan Magaini, 22 in Kaduna metropolis and an unspecified number in other unnamed settlements.
“Almost a week after the violent conflict erupted over an issue as trivial as a dispute over the correct measure of grains of maize in the market place, it is yet to abate as reports say today (Friday) there are fresh attacks and reprisals.
“The Kaduna crisis is not just a painful reminder of a relatively distant past we were better off without.
“It is a sad commentary on the state of our communal relations.
“It represents leadership failure in the state as pre-emptive security measures ought to have been put in place in Kaduna metropolis when this conflict started at Kasuwan Magaini,’’ he said.
Wabba noted that the root causes of the conflicts must be addressed and perpetrators brought to justice.
He added that “we believe human life still remains sacred in spite of our degeneration into a non-society.
“It is equally important for the Kaduna State Government to restore the security measures put in place by the Government of Makarfi which ensured peace and security in the state for over 10 years.
“Kaduna State cannot afford to continue to leave on the edge of the knife. The implications are enormous not just for Kaduna but the whole country.
“Finally, our sympathy and condolences go to those who have lost their properties or loved ones,’’ Wabba added.